Multiple choice

The ratio of the present age of Rahul and Deepak is (2 : 1). The ratio of their age after 30 years will be (7 : 6). What is the present age of Rahul?

  1. 15 years

  2. 12 years

  3. 20 years

  4. 18 years

  5. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Let Rahul's present age = 2x, Deepak's present age = x. After 30 years: Rahul = 2x + 30, Deepak = x + 30. Given (2x + 30)/(x + 30) = 7/6. Cross-multiplying: 6(2x + 30) = 7(x + 30), so 12x + 180 = 7x + 210, giving 5x = 30, x = 6. Rahul's present age = 2x = 12 years.

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