Multiple choice

The ratio between the ages of A and C is 5: x. A is 9 years younger than B. After 9 years, age of B will be 33 years. The difference of the ages of C and A is as same as the present age of B. What will be the value of x?

  1. 21

  2. 37

  3. 17

  4. 13
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Let present age of B = 24 years (since B + 9 = 33). Then A = B - 9 = 15 years. Given C - A = B = 24, so C = 39 years. The ratio A:C = 5:x means 5:x = 15:39 = 5:13. Therefore x = 13.

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