Multiple choice

The ratio of the present age of Rahul and Rashmi is 2 : 1. The ratio of their age after 30 years will be 7 : 6. What is the present age of Rahul ?

  1. 6 years

  2. 10 years

  3. 12 years

  4. 20 years

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

Let present ages be 2x and x. After 30 years: (2x + 30)/(x + 30) = 7/6. Cross-multiplying: 6(2x + 30) = 7(x + 30). 12x + 180 = 7x + 210. 5x = 30. x = 6. Rahul's present age = 2x = 12 years.