The ages of A and B are in the ratio 2 : 3. After 10 years, the sum of their ages will be 45. What is B's present age?
Answer and explanation
Correct answer: A. 15
- Step 1: Present ages are 2x and 3x; after 10 years their sum is 5x + 20.
- Step 2: (5)x + 20 = 45, so x = 5 and B's age is 15.
Answer
15.
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