A man is 4 times as old as his son. After 16 years, he will be twice as old as his son. What is the son's current age?
Q1. A man is 4 times as old as his son. After 16 years, he will be twice as old as his son. What is the son's current age?
Answer: 8 years
Explanation: Let's denote son's age as S and man's age as M. M = 4S. After 16 years, M + 16 = 2(S + 16). Substituting M = 4S, we get 4S + 16 = 2S + 32, simplifying to 2S = 16, hence S = 8.