Question

Sachin is younger than rahul by 4 years. If their ages are in the ratio of 7 9 how old is sachin

Answer 1

let rahul's be 7x

so sachin=9x

so,9x-4=7x

so,2x=4

x=2

so sachin's age = 18 yrs

Answer 2

Answer:

Let Rahul age be x years.

Then, Sachin age will be (x - 4) years.

According to Question now,

x - 4/x = 7/9

9(x - 4) = 7(x)

9x - 36 = 7x

9x - 7x = 36

2x = 36

x = 36/2

x = 2 years

Therefore,age of sachin will be 18 years.