Three years ago, the average age of A and B was 18 years. With C joining them, the average age becomes 22 years. How old is C now?
A. 20 years
B. 24 years
C. 27 years
D. 30 years
Ans: B.Sol.
Present age of ( A + B) = ( 18 × 2 + 3 × 2) years = 42 years.
Present age of ( A + B + C) = (22 × 3) years = 66 years.
Therefore C’s age = (66 – 42) years
= 24 years.
No comments:
Post a Comment