Multiple choice

Present ages of Ram and Amar are in the ratio 5: 6. After 7 years hence this ratio will become 6: 7. What is the difference between the Amar’s age after 10 years from now and Ram’s age after 5 years from now ?

  1. 6 years

  2. 12 years

  3. 10 years

  4. 4 years

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

Let Ram = 5x, Amar = 6x. After 7 years: (5x+7)/(6x+7) = 6/7. Cross-multiply: 35x+49 = 36x+42. So x=7. Ram = 35, Amar = 42. After 10 years Amar = 52. After 5 years Ram = 40. Difference = 52-40 = 12 years.