Six years ago, the ratio of ages of A to B was 7 : 5. 4 years from now, the ratio of their ages will be 11 : 9. What is A’s age at present?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3 i.e. 23 1/2 years
Given that
Six years ago, the ratio of ages of A to B was 7: 5.
4 years from now, the ratio of their ages will be 11: 9.
According to the question
(11 - 7) units = 6 + 4 = 10 years
4 units = 10 years
1 unit = 2.5 years
Hence, the present age of A = 7 × 2.5 + 6 = 17.5 + 6 = 23.5 years = 23 1/2 years