Question 56

Five years ago the ratio of Krishna’s age to his father’s age was 1:4 and five years from now their ages will be in the ratio 2:5 What is the ratio of their present ages ?

Solution

The ratio of ages of Krishna and his father 5 years ago was = 1:4

So, let their ages be x and 4x

Five years later their ages are x+10: 4x + 10

But that is in the ratio of 2 : 5

So, 5x + 50 = 8x + 20

So, x = 10

Their ages now = 15:45 = 1:3

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