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Question
A is twice as old as B. In 5 years, A will be 1.5 times B's age. How old is B now?
Answer
✅ **5** **Step:** Let B = x, A = 2x In 5 years: 2x + 5 = 1.5(x + 5) 2x + 5 = 1.5x + 7.5 0.5x = 2.5 → x = **5** **Check:** B = 5, A = 10 → in 5 years, 15 = 1.5 × 10 ✓ 💡 Always substitute back, and check you solved for the variable the question asks about (here B, not A).
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