The present ages of A and B are in the ratio 5:4. Exactly 3 years from now, their ages will be in the ratio 11:9. What is B's present age?

Correct answer: 24 years

Explanation: ✅ Correct Answer: A) 24 years 📚 Explanation: Let the present ages of A and B be 5x and 4x respectively. In 3 years, their ages will be (5x + 3) and (4x + 3). The new ratio is (5x + 3) ÷ (4x + 3) = 11 ÷ 9. Cross-multiplying gives 9 × (5x + 3) = 11 × (4x + 3). This becomes 45x + 27 = 44x + 33. Solving this equation yields x = 6. B's present age is 4x, which equals 4 × 6 = 24 years.