Quantitative Aptitude Ques 1776
Question: The average age of a family of five members is 24. If the present age of the youngest member is 8 yr, then what was the average age of the family at the time of the birth of the youngest member? [Corporation Bank (PO) 2011]
Options:
A) 20 yr
B) 16 yr
C) 12 yr
D) 18 yr
E) 21yr
Show Answer
Answer:
Correct Answer: A
Solution:
- Average of 5 members of a family is 24.
$ \therefore $ Total age of five members of a family $ =24\times 5=120 $
$ \therefore $ Total age of four members at the time of birth of the youngest member $ =120-8\times 5 $ $ =120-40=80yr $ Hence, required average age $ =\frac{80}{4}=20yr $
BETA
