Present ages of A and B are in ratio 5:6. After 5 years, the ratio becomes 6:7. What is A’s present age?
A20 years
B25 years
C30 years
D35 years
Explanation
Let present ages be 5x and 6x. Equation: (5x + 5)/(6x + 5) = 6/7 => 35x + 35 = 36x + 30 => x = 5. A’s age = 5 * 5 = 25 years.
Exam Relevance
- Topic: Age Problems, Time & Distance, Work
- Subtopic: Ratio & Age
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