Correct Answer - Option 2 : 45 years
Given:
The ratio of present ages (in years) of a father and son is 15 : 8. Six years ago.
And the ratio of their ages was 13 : 6.
Calculation:
Let the present age of father be 15x years.
And the present age of son be 8x years.
According to the question:
(15x – 6)/(8x – 6 ) = 13/6
⇒ 90x – 36 = 104x – 78
⇒ - 14x = - 42
⇒ x = 3
∴ The present age of father is 15x years = 15 × 3 = 45 years.