Question No : 1
The average of five numbers is 281. The average of the first two numbers is 280 and the average of the last two numbers is 178.5. What is the third number?
(1) 488
(2) 336
(3) 228
(4) 464
(5) None of these
Question No : 2
The average age of 14 boys in a class is 13 years. If the class teacher’s age is included, the average age is increased by one year. What is the class teacher’s age?
(1) 31 years
(2) 27.5 years
(3) 24 years
(4) 28 years
(5) None of these
Question No : 3
The average age of 39 students and a teacher of a class is 11 years. If the age of teacher is excluded the average age of class is reduced by 1. Find out age of that teacher.
(1) 49 years
(2) 50 years
(3) 51 years
(4) 39 years
(5) None of these
Question No : 4
The average of five positive numbers is 213. The average of the first two numbers is 233.5 and the average of last two numbers is 271. What is the third number?
(1) 64
(2) 56
(3) 106
(4) 74
(5) None of these
Question No : 5
The average age of 3 friends is 32 years. If the age of a fourth friend is added, their average age comes to 31 years. What is the age of the fourth friend?
(1) 32 years
(2) 28 years
(3) 24 years
(4) 26 years
(5) None of these
Question No : 6
(1) 53.8 kg
(2) 52.4 kg
(3) 53.2 kg
(4) Can’t say
(5) None of these
Question No : 7
In an experiment, the average of 11 observations is 90. If the average of the first five observations is 87, and that of the last five is 84, then the sixth observations is
(1) 135
(2) 145
(3) 150
(4) 165
(5) None of these
Question No : 8
The average age of 30 students of a class is 12 years. The average age of a group of 5 of the students is 10 years and that of another group of 5 of them is 14 years. What is the average age of the remaining students?
(1) 8 years
(2) 10 years
(3) 12 years
(4) 14 years
(5) None of these
Question No : 9
The total ages of a class of 75 girls is 1050, the average age of 25 of them is 12 years and that of another 25 is 16 years. Find the average age of the remaining girls?
(1) 12 years
(2) 13 years
(3) 14 years
(4) 15 years
(5) None of these
Question No : 10
The average age of a man and his twin sons born in the same days is 30 years. The ratio of the ages of father and one of his sons is 5 : 2 respectively. What is the father’s age?
(1) 50 years
(2) 30 years
(3) 45 years
(4) 20 years
(5) None of these
Question No : 11
The average of 5 consecutive even numbers A, B, C, D and E is 52. What is the product of B and E?
(1) 2916
(2) 2988
(3) 3000
(4) 2800
(5) None of these
Question No : 12
The ratio of ducks and frogs in a pond is 37 : 39 respectively. The average number of ducks and frogs in the pond is 152. What is the number of frogs in the pond?
(1) 148
(2) 152
(3) 156
(4) 144
(5) None of these
Question No : 13
The average age of Vijay, Sanjay and Pappu is 45 years. If the ratio of their ages is respectively 3 : 4 : 2, then find the age of Sanjay.
(1) 55 years
(2) 60 years
(3) 75 years
(4) 25 years
(5) None of these
Question No : 14
The average weight of a group of 75 girls was calculated as 47 kg. It was later discovered that the weight of one of the girls was read as 45 kg whereas her actual weight was 25 kg. What is the actual average weight of the group of 75 girls? (Rounded off to two digits after decimal)
(1) 46.73 kg
(2) 46.64 kg
(3) 45.96 kg
(4) Can’t say
(5) None of these
Question No : 15
The average price of 3 items of furniture is Rs.15000. If their prices are in the ratio 3 : 5 : 7, then price of the cheapest item is
(1) Rs.9000
(2) Rs.5000
(3) Rs.8000
(4) Rs.10000
(5) None of these
Question No : 16
Seema’s present age is four times her son’s present age and four-seventh of her father’s present age. The average of the present ages of all three of them is 32 years. What is the difference between the Seema’s son’s present age and Seema’s father’s present age?
(1) 44 years
(2) 48 years
(3) 46 years
(4) 64 years
(5) None of these
Question No : 17
Amit’s present age is three times Pratibha’s present age and nine-thirteenth of his father’s present age. The sum of the present age of all of them is 150 years. What is the difference between Pratibha’s present age and Amit’s father’s present age?
(1) 56 years
(2) 64 years
(3) 60 years
(4) Data inadequate
(5) None of these
Question No : 18
In a cricket team eleven, the average age of eleven players is 26 years. Out of these, the averages of three groups of three players each are 24 years, 27 years and 23 years. The captain and the youngest player who is 8 years younger than the captain are not included in these groups. The age of the captain is
(1) 33 years
(2) 39 years
(3) 35 years
(4) 36 years
(5) 24 years
Question No : 19
The total of the ages of a class of 75 girls is 1050, the average age of 25 of them is 12 years and that of another 25 is 16 years. Find the average age of the remaining girls
(1) 12 years
(2) 13 years
(3) 14 years
(4) 15 years
(5) None of these
Question No : 20
The average marks of a student in 8 subjects is 87. Of these, the highest marks is 2 more than the one next in value. If these two subjects are eliminated, the average marks of the remaining subjects is 85. What is highest marks obtained by him?
(1) 94
(2) 91
(3) 89
(4) 96
(5) None of these
Question No : 21
Find the average of the following set of scores.
345, 231, 777, 560, 892, 443, 546
(1) 545
(2) 540
(3) 542
(4) 245
(5) None of these
Question No : 22
The body weight of six boys is recorded as 42 kg., 72 kg., 85 kg., 64 kg., 54 kg., and 73 kg. What is the average body weight of all the six boys?
(1) 64 kg.
(2) 67 kg.
(3) 62 kg.
(4) 65 kg.
(5) None of these
Question No : 23
In a family, the average age of a father and a mother is 35 years. The average age of the father, mother and their only son is 27 years. What is the age of the son?
(1) 12 years
(2) 11 years
(3) 15 years
(4) 10 years
(5) None of these
Question No : 24
The average of a list of 6 numbers is 20. If we remove one of the numbers, the average of the remaining numbers is 15. What is the number that was removed?
(1) 45
(2) 30
(3) 195
(4) 22.5
(5) None of these
Question No : 25
The average age of five officers in a department is 32 years. If the age of their supervisor is added the average increased by 1. What is the supervisor’s age?
(1) 32 years
(2) 48 years
(3) 38 years
(4) 42 years
(5) None of these
Question No : 26
The mean of 50 numbers is 30. Later it was discovered that two entries were wrongly entered as 82 and 13 instead of 28 and 31. Find the correct mean.
(1) 36.12
(2) 30.66
(3) 29.28
(4) 38.21
(5) None of these
Question No : 27
The average height of 27 persons was recorded as 162 cm. If the height of Shreya was deleted from the observation, the average height reduced by 1 cm. What was Syreya’s height?
(1) 184 cm.
(2) 226 cm.
(3) 179 cm.
(4) 186 cm.
(5) None of these
Question No : 28
The average height of four boys was recorded as 170 cm. If the average of the heights of three boys out of the four was 172 cm, what was the height of the fourth boy?
(1) 156 cm.
(2) 168 cm.
(3) 170 cm.
(4) 164 cm.
(5) None of these
Question No : 29
The average monthly income of a family of four earning members was Rs.15130. One of the daughters in the family got married and left home, so the average monthly income of the family came down to Rs.14660. What is the monthly income of the married daughter?
(1) Rs.15350
(2) Rs.12000
(3) Rs.16540
(4) Cannot be determined
(5) None of these
Question No : 30
The sum of five numbers is 260. The average of the first two numbers is 30 and the average of the last two numbers is 70. What is the third number?
(1) 33
(2) 60
(3) 75
(4) 70
(5) None of these
Question No : 31
The average of 5 positive integers is 436. The average of first two numbers is 344 and the average of last two numbers is 554. What is the third number?
(1) 482
(2) 346
(3) 556
(4) 384
(5) None of these
Question No : 32
If the average of 39, 48, 51, 63, 75, 83, x and 69 is 60, then the value of x is
(1) 52
(2) 53
(3) 50
(4) 51
(5) None of these
Question No : 33
The average of 5 numbers is 306.4. The average of the first two numbers is 431 and the average of the last two numbers is 214.5. What is the third number?
(1) 241
(2) 252
(3) 321
(4) 108
(5) None of these
Question No : 34
There are nine positive observations. Average of the first six observations is 10 and of the last four observations is 17. If the average of these nine observations is 13, what is the sixth observation?
(1) 17
(2) 11
(3) 15
(4) Cannot be determined
(5) None of these
Question No : 35
The average of 50 numbers is 38. If two numbers namely 45 and 55 are discarded, the average of the remaining number is:
(1) 36
(2) 35
(3) 32.5
(4) 37.5
(5) None of these
Question No : 36
There are five positive observations. Average of the first three observations is 8 and that of the last three observations is 6. If the average of all five observations is 6, what is third observation?
(1) 10
(2) 8
(3) 12
(4) 14
(5) 6
Question No : 37
The average age of 7 boys sitting in a row facing North is 26 years. If the average age of first 3 boys is 19 years and the average age of last 3 boys is 32 years. What is the age of the boy who is sitting in middle of the row?
(1) 28 years
(2) 29 years
(3) 24 years
(4) 31 years
(5) None of these
Question No : 38
The average of 20 numbers is 15 and the average of first five is 12. The average of the rest is
(1) 16
(2) 15
(3) 14
(4) 13
(5) None of these
Question No : 39
The average weight of M, N and O is equal to 65 kg. The average weight of M and N is equal to 69.5 kg. The average weight of N and O is 66.5 kg. What is the weight of N?
(1) 74 kg
(2) 75 kg
(3) 77 kg
(4) 80 kg
(5) None of these
Question No : 40
The average temperature of the first three days is 27°and that of next three days is 29°C. If the average temperature of the whole week is 28.5°C, find the temperature of the last day.
(1) 81°C
(2) 87°C
(3) 31.5°C
(4) 38°C
(5) None of these
Question No : 41
Out of 20 boys, 6 are each of 1 m 15 cm height, 8 are of 1 m 10 cm and rest of 1 m 12 cm. the average height of all of them is
(1) 1 m, 12 cm
(2) 1 m, 12.1 cm
(3) 1 m, 21.1 cm
(4) 1 m, 21 cm
(5) None of these
Question No : 42
The average of Ajith’s marks in English, Mathematics and Science is 75 and the average of his marks in English, Mathematics, Science and Hindi is 70. How many marks did he score in Hindi?
(1) 225
(2) 55
(3) 280
(4) 50
(5) None of these
Question No : 43
The average age of 80 boys in a class is 15. The average age of a group of 15 boys in the class is 16 and the average age of another 25 boys in the class is 14. What is the average age of the remaining boys in the class?
(1) 15.25
(2) 14
(3) 14.75
(4) Data Inadequate
(5) None of these
Question No : 44
The average of 30 numbers is 40 and that of other 40 numbers is 30. The average of all the numbers is
Question No : 45
There are 30 students in a class. The average age of the first 10 students is 12.5 years. The average age of the next 20 students is 13.1 years. The average age ( in years) of the whole class is
(1) 12.5
(2) 12.7
(3) 12.8
(4) 12.9
(5) None of these
Question No : 46
The average weight of 15 oarsmen in a boat is increased by 1.6 kg when one of the crew, who weighs 42 kg is replaced by a new man. Find the weight of the new man (in kg).
(1) 65
(2) 66
(3) 43
(4) 67
(5) None of these
Question No : 47
Average marks obtained in History by 45 students in ‘A’ division are 75 and the average marks obtained by 40 students in ‘B’ division are 78. What are the overall average marks obtained in History by the students in both the divisions (rounded off to two digits after decimal)?
(1) 76.81
(2) 77.11
(3) 77.41
(4) 76.41
(5) None of these
Question No : 48
The average of 32 boys in a class is 14 and the average age of 26 girls in the class is 12. What is the average age of all the boys and girls? (rounded off to two digits after decimal)
(1) 12.90
(2) 13.10
(3) 13.50
(4) 13.40
(5) None of these
Question No : 49
The average of 13 results is 70. The average of first seven is 65 and that of the last seven is 75, the seventh result is:
(1) 70
(2) 70.5
(3) 68
(4) 67
(5) None of these
Question No : 50
The average age of a class of 65 boys was 14 years, the average age of 20 of them was 14 years and that of another 15 was 12 years. Find the average age of the remaining girls.
(1) 16 years
(2) 13 years
(3) 17 years
(4) 15 years
(5) None of these
Question No : 51
The average age of 30 boys in a class is 16 and the average age of 20 girls in the class is 14. What is the average age of all the boys and girls together?
(1) 15.2
(2) 15
(3) 14.5
(4) 14
(5) None of these
Question No : 52
The average of 9 observations was found to be 35. Later on it was detected that an observation 81 was misread as 18. The correct average of the observations is
(1) 28
(2) 42
(3) 32
(4) 45
(5) None of these
Question No : 53
The average age of 30 students in a class is 12 years. The average age of a group of 5 of the students is 10 years and that of another group of 5 students is 14 years. Find the average age of remaining students.
(1) 24
(2) 12
(3) 40
(4) 20
(5) None of these
Question No : 54
Average age of seven persons in a group is 30 years. The average age of five persons of this group is 31 years. What is the average age of the other two persons in the group?
(1) 27.5 years
(2) 25 years
(3) 55 years
(4) 155 years
(5) None of these
Question No : 55
The total age of a class of 60 girls is 900 years. The average age of 20 of the girls is 12 years and that of the other 20 girls is 16 years. What is the average age of the remaining girls?
(1) 14 years
(2) 15 years
(3) 16 years
(4) 17 years
(5) None of these
Question No : 56
The average of the ages of a man and his daughter is 39 years. If the respective ratio of their ages is 8 : 5, what will be the man’s age after 5 years?
(1) 43 years
(2) 53 years
(3) 54 years
(4) 5 years
(5) None of these
Question No : 57
The average of 5 numbers is 306.4. The average of the first two numbers is 431 and the average of the last two numbers is 214.5. What is the third number?
(1) 108
(2) 52
(3) 321
(4) Can’t say
(5) None of these
Question No : 58
The average age of a man and his son is 33 years. The ratio of their ages is 8 : 3 respectively. What is the man’s age?
(1) 48 years
(2) 44 years
(3) 42 years
(4) 50 years
(5) None of these
Question No : 59
The ratio between the present ages of son, mother, father and grandfather is 2 : 7 : 8 : 12. The average age of son and mother is 27 years. What will be mother’s age after 7 years?
(1) 40 years
(2) 49 years
(3) 48 years
(4) Cannot be determined
(5) None of these
Question No : 60
The total marks obtained by a student in Physics, Chemistry and Mathematics together is 120 more than the marks obtained by him in Chemistry. What are the average marks obtained by him in Physics and Mathematics together?
(1) 60
(2) 120
(3) 40
(4) Can’t say
(5) None of these
Question No : 61
The Average age of three boys is 25 years and their ages are in the proportion 3 : 5 : 7. The age of the youngest boy is
(1) 21 years
(2) 8 years
(3) 15 years
(4) 9 years
(5) None of these
Question No : 62
The respective ratio between the present ages of father, mother and daughter is 7 : 6 : 2. The difference between mother’s and the daughter’s age is 24 years. What is the father’s age at present?
(1) 43 years
(2) 42 years
(3) 39 years
(4) 38 years
(5) None of these
Question No : 63
Rita’s present age is four times her daughter’s present age and two-third of her mother’s present age. The total present ages of all of them is 154 years. What is the difference between Rita’s and her mother’s present age?
(1) 28 years
(2) 34 years
(3) 32 years
(4) Data inadequate
(5) None of these
Question No : 64
Samir’s age is one-fourth of his father’s age and two-third of his sister Reema’s age. What is the ratio of the ages of Samir, Reema and their father respectively?
(1) 3 : 2 : 8
(2) 3 : 4 : 8
(3) 2 : 3 : 8
(4) 4 : 3 : 8
(5) None of these
Question No : 65
Priya’s monthly income is twice Deepa’s monthly income. The ratio of the monthly income of Deepa and Sudha is 7 : 3 respectively and their average monthly income is Rs.25,000. What is Priya’s monthly income?
(1) Rs.35,000
(2) Rs.50,000
(3) Rs.75,000
(4) Data inadequate
(5) None of these
Question No : 66
Raman’s present age is three times his daughter’s present age and nine-thirteenth of his mother’s present age. The sum of the present ages of all of them is 125 years. What is the difference between the Raman’s daughter’s present age and Raman’s mother’s present age?
(1) 45 years
(2) 40 years
(3) 50 years
(4) 35 years
(5) None of these
Question No : 67
The average age of 80 boys in a class is 15 years. The average age of a group of 15 boys in the class is 16 years and the average age of another 25 boys in the class is 14 years. What is the average age of the remaining boys in the class?
(1) 15.25 years
(2) 14 years
(3) 14.75 years
(4) Can’t say
(5) None of these
Question No : 68
Last month the number of employees in Bank A was 3/4th of the number of employees in Bank B and the average number of employees of both the banks was 3108. Two employees resigned from Bank B this month. What is the total number of employees in Bank B at present?
(1) 3550
(2) 2662
(3) 3560
(4) 2642
(5) 3650
Question No : 69
Last month the number of employees in company A was 1/3 rd the number of employees in company B and the average number of employees of both the companies was 718. Company A recruited one more employee this month. What is the total number of employees in company A at present?
(1) 380
(2) 370
(3) 360
(4) 340
(5) 350
Question No : 70
In a cricket team eleven, the average age of eleven players is 27 years. Out of these, the averages of three groups of three players each are 26 years, 24 years and 28 years. The captain and the youngest player who is 7 years younger than the captain are not included in these groups. What is age of younger player?
(1) 29 years
(2) 25 years
(3) 28 years
(4) 26 years
(5) 24 years
Question No : 71
The average marks of a student in 8 subjects is 86. Of these, the highest marks is 4 more than the one next in value. If these two subjects are eliminated, the average marks of the remaining subjects is 83. What is highest marks obtained by him?
(1) 84
(2) 97
(3) 99
(4) 86
(5) None of these
Question No : 72
The average marks in English subject of a class of 24 students is 56. If the marks of three students were misread as 44, 45 and 61 of the actual marks 48, 59 and 67 respectively, then what would be the correct average?
(1) 56
(2) 55
(3) 57.5
(4) 58.5
(5) None of these
Question No : 73
Four years ago, Tina is 18 years younger than Ruchi. If present total age of Ruchi and Tina is 50 years, then find the ratio between present age of Tina to present age of Ruchi?
(1) 9 : 17
(2) 17 : 8
(3) 17 : 9
(4) 6 : 17
(5) 8 : 17
Question No : 74
The average monthly expenditure of a family was Rs.2200 during first 3 months, Rs.2550 during next 4 months and Rs.3120 during last 5 months of the year. If the total saving during the year was Rs.1260, find average monthly income.
(1) Rs.3960
(2) Rs.760.8
(3) Rs.2805
(4) Rs.3125
(5) None of these
Question No : 75
The sum of the present ages of P and Q is 25 years more than the age of R. The present age of Q is 5 years more than that of R. Find the present age of P.
(1) 20 years
(2) 25 years
(3) 21 years
(4) 22 years
(5) None of these
Question No : 76
The average expenditure of a man for the first five months was Rs.120 and for the next seven months is Rs.130. What was his monthly average income if he saved Rs.290 in that years?
(1) Rs.1825
(2) Rs.1800
(3) Rs.1850
(4) Rs.1900
(5) None of these
Question No : 77
The average daily wages of 450 workers in a factory is Rs.45 and the average daily wages of 340 workers in another factory is Rs.60. What is the approximate average daily wages of workers from both the factories together?
(1) Rs.58
(2) Rs.55
(3) Rs.45
(4) Rs.51
(5) Rs.62
Question No : 78
The average of four consecutive even numbers P, Q, R and S respectively (in increasing order) is 51. What is the product of P and R?
(1) 2592
(2) 2400
(3) 2600
(4) 2808
(5) None of these
Question No : 79
The average age of a husband and wife was 23 years when they were married 5 years ago. The average age of the husband, the wife and a child who was born during the interval, is 20 years now. How old is the child now?
(1) 9 months
(2) 1 year
(3) 4 years
(4) 3 years
(5) 6 years
Question No : 80
The average age of father and his two sons is 27 years. Five years ago, the average age of the two sons was 12 years. If the difference between the ages of two sons is four, what is the present age of the father?
(1) 42
(2) 48
(3) 47
(4) 44
(5) None of these
Question No : 81
The average marks in Science subject of a class of 20 students is 68. If the marks of two students were misread as 48 and 65 instead of the actual marks 72 and 61 respectively, what would be the correct average?
(1) 68.5
(2) 69
(3) 69.5
(4) 70
(5) 66
Question No : 82
A batsman scores 35, 45 and 37 runs in first, second and third innings respectively. Find the average runs in the three innings.
(1) 35
(2) 39
(3) 45
(4) 30
(5) None of these
Question No : 83
Average weight of 19 men is 74 kg and the average weight of 38 women is 63 kg. What is the average weight (rounded off to the nearest integer) of all the men and the women together?
(1) 59 kg
(2) 65 kg
(3) 69 kg
(4) 67 kg
(5) 71 kg
Question No : 84
In an examination, a student scores 4 marks for every correct answer and loses 1 mark for every wrong answer. A student attempted all the 200 questions and scored in all 200 marks. The number of question, he answered correctly was:
(1) 82
(2) 80
(3) 68
(4) 60
(5) None of these
Question No : 85
Average age of 36 children of the class is 15 years. 12 more children joined whose average age is 16 years. What is the average age of all the 48 children together?
(1) 15.25 years
(2) 15.5 years
(3) 15.3 years
(4) 15.4 years
(5) None of these
Question No : 86
10 years ago, the average age of family of 3 members was 19 years. Two children Sonu and Monu having been born; average age of the family is same today. What is the present age of the youngest member of the family assuring that Sonu and Monu’s ages differ by two years?
(1) 3 years
(2) 5 years
(3) 1 years
(4) 11/2 years
(5) None of these
Question No : 87
Of the three numbers, the average of the first and the second is greater than the average of the second and the third by 15. What is the difference between the first and the third of the three numbers?
(1) 15
(2) 45
(3) 30
(4) Data inadequate
(5) None of these
Question No : 88
The average of 4 positive integers is 59. The highest integer is 83 and the lowest integer is 29. The difference between the remaining two integers is 28. Which of the following integers is larger than the remaining two integers?
(1) 48
(2) 76
(3) 39
(4) 46.66
(5) None of these
Question No : 89
Five years ago average age of P and Q was 15 years. Average age of P, Q and R today is 20 years. How old R will be after 10 years.
(1) 32 years
(2) 25 years
(3) 35 years
(4) 30 years
(5) None of these
Question No : 90
The average age of 25 boys and the class teacher is 16 years. If the ages of the class teacher and one of the boys are excluded, the average age reduces to 15 years. What is the age of the class teacher?
(1) 28
(2) 56
(3) 32
(4) Data inadequate
(5) None of these
Question No : 91
The average age of a class was 15 years. When 5 boys whose average was 12 years and 6 months were admitted, the class average was reduced by 6 months. How many boys were there in the class?
(1) 20
(2) 25
(3) 30
(4) 14
(5) None of these
Question No : 92
The average height of four boys was recorded as 170 cm. If the average of the heights of three boys out of the four was 172 cm., what was the height of the fourth boy?
(1) 156 cm
(2) 168 cm
(3) 170 cm
(4) 162 cm
(5) None of these
Question No : 93
Average score of Rahul, Manish and Suresh is 63. Rahul’s score is 15 less than Ajay and 10 more than Manish. If Ajay scored 30 marks more than the average score of Rahul, Manish and Suresh, what is the sum of Manish’s and Suresh’s scores?
(1) 120
(2) 111
(3) 117
(4) 267
(5) None of these
Question No : 94
The average of the ages of Sumit, Krishna and Risha is 43 years and the average of the ages of Sumit, Risha and Rohit is 49 years. If Rohit is 54 years old, what is Krishna’s age?
(1) 45 years
(2) 24 years
(3) 36 years
(4) 62 years
(5) None of these
Question No : 95
The average weight of 40 children of a class is 36.2 kg. When three more children with weights 42.3 kg, 39.7 kg and 39.5 kg join the class, the average weight of the 43 children in the class is:
(1) 39.2 kg
(2) 36.5 kg
(3) 38.35 kg
(4) 37.3 kg
(5) None of these
Question No : 96
The average age of some males and 15 females is 18 years. The sum of the ages of 15 females is 240 years and average of male is 20 years. Find the number of males.
(1) 8
(2) 7
(3) 10
(4) 15
(5) None of these
Question No : 97
7 kg of wheat having a rate of Rs.14 per kg is mixed with 4 kg of wheat having a rate of Rs.8.50. What is the average rate per kg of the mixture?
(1) Rs.12 per kg
(2) Rs.11 per kg
(3) Rs.10 per kg
(4) Rs.9 per kg
(5) None of these
Question No : 98
In a class, there are 40 boys and their average is 16 years, if one boy, aged 17 years, leaving the class and another joining, the average age becomes 15.875 years. The age of the new boy is-
(1) 11 years
(2) 12 years
(3) 17 years
(4) 15 years
(5) None of these
Question No : 99
The average age of A, B, C and D five years ago was 45 years. By including E, the present age of all the five is 49 years. What is the present age of E?
(1) 45
(2) 20
(3) 49
(4) 54
(5) None of these
Question No : 100
The average salary of 15 persons is Rs.5500. If the salary of one person is added, the average increases to Rs.5700. What is the salary of this one person?
(1) Rs.8500
(2) Rs.9500
(3) Rs.7800
(4) Rs.8700
(5) None of these
Question No : 101
The average height of four girls was recorded as 150 cm. If the average of the heights of three girls out of the four was 148 cm, what was the height of the fourth girl?
(1) 156 cm
(2) 168 cm
(3) 170 cm
(4) 162 cm
(5) None of these
Question No : 102
Ram’s son’s age is 1/3 of Ram’s wife’s age. Ram’s wife’s age is 4/5 of Ram’s age and Ram’s age is 3/5 of Ram’s father’s age. Find the age of the son of Ram, if Ram’s father is 50 years old?
(1) 8 years
(2) 10 years
(3) 12 years
(4) 6 years
(5) None of these
