engineering intelligence MCQ #309

The ratio of the ages of A and B is 4 : 5. After 5 years, the ratio becomes 5 : 6. What are their current ages?

engineering intelligence MCQ #309

  1. Question 1

    Q1. The ratio of the ages of A and B is 4 : 5. After 5 years, the ratio becomes 5 : 6. What are their current ages?

    • A) 20, 25
    • B) 15, 20
    • C) 10, 15
    • D) 25, 30

    Answer: 20, 25

    Explanation: Let's denote A's age as 4x and B's as 5x. After 5 years, (4x + 5) / (5x + 5) = 5 / 6. Cross-multiplying gives 6(4x + 5) = 5(5x + 5), 24x + 30 = 25x + 25, x = 5.