Q. The ages of A and B are in the ratio 5 : 7. If B is 42 years old, A's age is
✅ Correct Answer: (B)
30 years
Explanation: One part = 42 ÷ 7 = 6. A's age = 5 × 6 = 30 years.
Explanation by: Roshan
One part = 42 ÷ 7 = 6. A's age = 5 × 6 = 30 years.