Question

Nitin is as old as 3 time Rohit is.after 3 year he will be twice as old as Rohit.find their present age

Answer 1

Let the present age of rohit bex
So present age of nitin is 3x
A.to.Q
2(x+3)=3x+3
2x+6=3x+3
x=3yrs (rohit's age)
nitin's age=9yrs

Answer 2

Answer:

let Rohit's present age = x years

Then Nitin's present age = 3x years

After three years

Rohit's age = (x+3)

Nitin's age = (3x+3)

A.T.Q ( According to the question) :

3x+3 = 2(x+3)

3x +3 = 2x+6

3x-2x = 6-3

x = 3

Rohit's present age = (x) 3 years

Nitin's present age = (3x) 3×3 = 9 years

check

After three years , Rohit's age will be 6 years and Nitin's will be 12 years

And , 12= 6×2

Hence verified