Question

Five years ago 1/5 of a’s age was equal to 1/7 of b’s age. find a’s age after 5 years

Answer 1

Let the A's age five years ago was x year's

So, B's age was 5 years ago was 2.25 x years

According to question

x × (2.25)x = 900

2.25x2 = 900

x2 = 900/2.25

x2 = 400

x = 20

A's age will be 25 years(20 + 5)