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Today the ages of Imran and his cousin are in the ratio 4 : 3. In 4 years the ratio will be 9 : 7. How old is Imran now (in years)?

Competition practiceRatio, Proportion & Mixtures

A32
B24
C36
D28

Step-by-Step Solution

Let the ages be

4 x

and

3 x . (4 x + 4) / (3 x + 4) = 9/7

gives

28 x + 28 = 27 x + 36

, so

x = 8

. Imran is

4 \times 8 = 32

.

Answer: A) 32

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