The ratio of present ages of A and B is 6 : 7. Five years hence, this ratio would become 7 : 8. Find the present age of A.

Question: The ratio of present ages of A and B is 6 : 7. Five years hence, this ratio would become 7 : 8. Find the present age of A.Solution: LetA’s present age = 6n yearsB’s present age = 7n yearsSo, according to the question(6n + 5)/(7n + 5) = 7/8⇒ 48 n + 40 = 49 n + 35⇒ n = 5Thus, A’s present age = 6n = 30 years