Correct Answer - Option 4 : 84 years
Given:
Raju currently 18 years older than Ravi
After 6 years the ratio of their age = 15: 12
Calculations:
Raju is currently 18 years older than Ravi
Difference between Raju and Ravi = 18 years
After 6 years’ age ratio of Raju and Ravi = 15 ∶ 12
Ratio of age difference = 15 – 12 = 3
⇒ 3 = 18
⇒ 1 = 6
Now, Raju's age after 6 years = 15 × 6 = 90
Raju's present age = 90 – 6 = 84 years
∴ The present age of Raju is 84 years