Quantitative Aptitude Ques 113

Question: The average age of 11 cricket players is 20 yr. If the age of the coach is also included, then the average age increases by 10%, The age of the coach is

Options:

A) 48 yr

B) 44 yr

C) 40 yr

D) 36 yr

Show Answer

Answer:

Correct Answer: B

Solution:

  • Given, average age of 11 players = 20

$ \therefore $ Sum of the ages of players $ =20\times 11=220 $ According to the question, $ \frac{220+\text{Coach }’\text{ s},age}{12}=20+\frac{20\times 10}{100} $

$ \Rightarrow $ 220 + Coach’s age $ =22\times 12=264 $

$ \therefore $ Coach’s age $ =264-220=44,yr $