Question

Five years ago, average age of P and Q was 15 years. Average age of P, Q and R today is 20 years. How old will R be after 10 years?

• A. 35 years
• B. 40 years
• C. 30 years
• D. 50 years

Answer 1

Answer:

C. 30 years

Sum of ages of P and Q today = 15 x 2 + 10 = 40 Sum of ages of P, Q and R today = 20 x 3 = 60 years Age of R today = 60 - 40 = 20 Age of R after 10 years = 20 + 10 = 30 years