A father is 40 and his son is 10. In how many years will the father be twice as old as the son?

  1. 30 years
  2. 10 years
  3. 20 years
  4. 25 years
Answer

C) 20 years

40 + x = 2(10 + x) Rightarrow x = 40 - 20 = 20.

Quantitative Reasoning MCQ · More Speed, Time, Work & Ages MCQs · Practise