# Crack IBPS PO : Averages | Aptitude day 66

**D.1-10) Study the following and answer the questions:**

Q.1) The average age of the husband and the wife is 27 years when they got married 6 years ago. But now the average age of husband, wife & child was 24 years. How old is the child now?

a) 6 yrs

b) 7yrs

c) 8yrs

d) 9yrs

e) 5yrs

Q.2) The average of height of the students in a class was 180cm. When 5 student’s whose average height is 146.4cm are newly admitted The average height of the class was reduced by 12cm. How many students are present in the class?

a) 9

b) 5

c) 13

d) 14

e) 10

Q.3) Find the average of even numbers between 251 & 401?

a) 320

b) 322

c) 324

d) 326

e) 328

Q.4) Arun married 7 years ago at the age of 30 years. His wife’s present ageis 33years. If 8 years later from marriage the average age of Arun, his wife and their son was 30 years, then what is son’s present age?

a) 5yr

b) 4yrs

c) 3yrs

d) 2yrs

e) None of these

Q.5) The average score of a cricketer for 11 matches is 44 runs. If the average for the first 6 matches is 42, then find the average for the last 5 matches is,

a) 42.8 runs

b) 46.4 runs

c) 48.2 runs

d) 50 runs

e) None of these

Q.6) The average scores of a group of students in a test is 142. The 23% of student’s average score is 126 and 51% of student’s average score is150. Then find the average score of remaining 26% of students approximately,

a) 134

b) 136

c) 140

d) 142

e) 144

Q.7) In the first 15 over’s of a cricket game, the run rate was only 8. What should be the run rate in the remaining 35over’s to reach the target of 557.5 runs?

a) 12.5 runs per over

b) 14 runs per over

c) 10.6 runs per over

d) 13.5 runs per over

e) None of these

Q.8) The average weight of three boys A, B and C is 75 kg, while the average weight of three boys B, D and E is 102 kg. What is the average weight of A, B, C, D and E?

a) 78kg

b) 80 kg

c) 82kg

d) Data inadequate

e) None of these

Q.9) The average age of A and B is 24 years. If C replaced A, the average would be 20 and if C replaced by B, the average would be 22. What are the ages of A, B and C respectively?

a) 18, 26, 22

b) 22, 16, 26

c) 26, 18, 22

d) 26, 22, 18

e) None of these

Q.10) The average weight of 12 men is decreased by 6 kg when one of them weighing 250 kg is replaced by another person. This new person is again replaced by another person whose weight is 34 kg lower than the person he replaced What is the overall change in the average due to these dual changes?

a) 6kg

b) 12kg

c) 18kg

d) 20kg

e) None of these

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## 3 comments

whether 10 th solution is correct or not.12x-178+144/12 won’t come there finally. I don’t understand the problem.anyother easy solution?

1 don’t understand the 4 th question. can you give detailed solution

in 10th sum we need to subtract 106

equation (12x-106)/12=x-r

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