The ratio of the present ages of Sunil and his wife is 4:3 . After 4 years, the ratio of their ages will be 9:7. What is the present age of Sunil?

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Solution

Let sunil age be 4x.
his wife age be 3x.
after 4 years their ages:
4x+4 and 3x+4
(4x+4 )/3x+4=9/7
(4x+4)7=(3x+4)9
28x+28=27x+36
28x-27x=36-28
x= 8

sunil age = 4(8)=32 (ans)
his wife age=3(8)=24

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