Question

Three years ago the average age of A and B is 18yrs. With the joining of C now, the average becomes 22 yrs. How old is C now?

• A. 24 years
• B. 30 years
• C. 28 years
• D. 27 years

Answer 1

Answer:

A. 24 years

3 years ago the average age of A and B=18 years . the present average age of A and B = 18+3=21yrs The total age of A and B=21x2=42yrs Now after the joining of C, the average age becomes 22 yrs. The total age of A, B and C=22x3=66 yrs. Now the age of 'C'=66-42=24yrs