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

5 years

10 years

20 years

37 years

Suppose, the ratio was 3 : 5, x years ago. Then, (40 - x)/(60-x) = 3/5 5 (40 - x) = 3(60 - x) 2x = 20 x = 10

hi man im not getting your solution that is x=10 ; my ans is x=55; can u explain briefly how you are getting x=10 thanks in advance :-)

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