Multiple choice

The present ratio of ages of A and B is 3 : 1. Four years ago the ratio of their ages was 4 : 1. What is the present age of A?

  1. 40

  2. 48

  3. 36

  4. 32
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Let present ages be 3x and x. Four years ago: (3x-4)/(x-4) = 4/1. Solving: 3x - 4 = 4x - 16. Therefore x = 12. Present age of A = 3x = 36. Option C (36) is correct.

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