Multiple choice

The ratio of the present ages of A and B is 7 : 5. After seven years, ratio of their ages will be 21 : 16. C is five years older than A. What will be age of C after five years? A और B की वर्तमान आयु का अनुपात 7:5 है। सात वर्ष बाद, उनकी आयु का अनुपात 21:16 होगा। C, A से पांच वर्ष बड़ा है। पांच वर्ष बाद C की आयु क्या होगी?

  1. 37 years 37 वर्ष

  2. 43 years 43 वर्ष

  3. 38 years 38 वर्ष

  4. 40 years 40 वर्ष

  5. None of these इनमें से कोई नहीं
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Let A's age=7x, B's age=5x. After 7 years: (7x+7)/(5x+7)=21/16. Solving: 112x+112=105x+147, so 7x=35, x=5. A is 35, B is 25. C is 5 years older than A, so C is 40. After 5 years, C will be 45. None of the given options (37, 43, 38, 40) equal 45, so E is correct. Options A, C, and D don't account for the 5-year forward projection correctly.

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