Multiple choice

The ratio of Radha and Meena’s present age is 9 : 10. 10 years before, the ratio of their ages was 4 : 5. What is Meena’s present age ?

  1. 25 years

  2. 20 years

  3. 30 years

  4. 24 years

  5. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Let present ages be 9x and 10x. Ten years ago: (9x-10)/(10x-10) = 4/5. Cross-multiply: 5(9x-10) = 4(10x-10), so 45x-50 = 40x-40, giving 5x = 10, thus x = 2. Meena's present age = 10x = 20 years.

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