Quantitative Aptitude Ques 55
Question: Three years ago the average age of a family of 5 members was 17 yr. A baby having been born, the average age of the family is the same today. The present age of the baby is
Options:
A) 1 yr
B) $ 1\frac{1}{2},yr $
C) 2 yr
D) 3 yr
Show Answer
Answer:
Correct Answer: C
Solution:
- Total age of a family of 5 members, 3 yr ago $ =5\times 17=85,yr $
$ \therefore $ Total present age of a family of 5 members $ =85+5\times 3 $ $ =85+15=100,yr $ and total present age of a family of 6 members $ =6\times 17=102,yr $
$ \therefore $ Present age of the baby $ =(102-100)=2,yr $
BETA
