Multiple choice

The ages of A and B in the ratio 3:1. Fifteen years hence ,the ratio will be 2:1, their persent ages are- A और B की उम्र का अनुपात 3 : 1 है। 15 वर्ष बाद उनकी वर्तमान उम्र का अनुपात 2 : 1 होगा। उनकी वर्तमान उम्र है-

  1. 30, 10

  2. 45, 15

  3. 60, 20

  4. 51, 17
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Let current ages be 3x and x. After 15 years: (3x+15)/(x+15) = 2/1. Cross-multiplying: 3x + 15 = 2x + 30. Solving: x = 15. Current ages: 3×15 = 45 and 15. Option B (45, 15) is correct.

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