Multiple choice

The ratio of present ages of Suresh and Mukesh is 6 : 7 respectively. The ratio of their ages 8 years hence would be 8 : 9 respectively. What would be the respective ratio of their ages after 12 years?

  1. 10 : 11

  2. 10 : 13

  3. 9 : 10

  4. 15 : 17

  5. 17 : 19
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Let present ages be 6x and 7x. After 8 years: (6x+8)/(7x+8)=8/9. Cross-multiply: 9(6x+8)=8(7x+8) → 54x+72=56x+64 → 72-64=56x-54x → 8=2x → x=4. Present ages: 24 and 28. After 12 years: 36 and 40. Ratio = 36:40 = 9:10.

Keep practicing — related questions