Harsha is 40 years old and Ritu is 60 years old. How many

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Harsha is 40 years old and Ritu is 60 years old. How many years ago was the ratio of their ages 3:5?

1. 10 years
2. 20 years
3. 37 years
4. 5 years

Correct Option: A

Let x years ago the ratio of their age was 3 : 5
∴ According to the question

40 − x	=	3
60 − x	=	5

⇒ 200 – 5x = 180 – 3x
⇒ 2x = 20
∴ x = 10 years