Multiple choice

The ratio of present ages of Shyam and Sohan is 7: 8 respectively. Four years hence this ratio becomes 9: 10 respectively. What is Shyam's present age in years? श्याम और सोहन की वर्तमान आयु का अनुपात क्रमशः 7 : 8 है। चार वर्ष पश्चात यह क्रमशः 9 : 10 हो जाता है। श्याम की वर्तमान आयु क्या है? (वर्ष में)

  1. 12

  2. 14

  3. 16

  4. 15

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Let present ages be 7x and 8x. After 4 years: (7x+4)/(8x+4) = 9/10. Cross-multiplying: 70x+40 = 72x+36, so 2x = 4 and x = 2. Shyam's present age = 7x = 14 years. The ratio changes consistently as both ages increase by the same amount.