Multiple choice

The ages of Chinmay and Maulik are in the ratio 5 : 2, respectively. After 7 years, the ratio of their ages will be 4 : 3. What is Chinmay's age?

  1. 10 years

  2. 5 years

  3. 6 years

  4. 12 years

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

Let ages be 5x and 2x. (5x + 7) / (2x + 7) = 4 / 3. 15x + 21 = 8x + 28. 7x = 7, so x = 1. Chinmay's age is 5x = 5.

AI explanation

Let the present ages of Chinmay and Maulik be 5x and 2x. After 7 years, their ages will be 5x + 7 and 2x + 7, so the equation is (5x + 7) / (2x + 7) = 4 / 3. Cross-multiplying yields 15x + 21 = 8x + 28, which simplifies to 7x = 7 and x = 1. Chinmay's present age is 5(1) = 5 years.

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