Correct Answer - Option 3 : 10
Given:
The present age of Ravi = 18 years
Calculation:
Ravi's elder brother is 5 years older than him.
Present age of Ravi's elder brother = 18 + 5 = 23 years
Age of Ravi's elder brother 15 years ago = 23 - 15 = 8 years
So, the Difference between Ravi present age and his brother's age 15years ago = 18 - 8 = 10 years