Question

Sachin was twice as old as Ajay 10 years back.how old is Ajay today if Sachin will be 40 years old 10 years hence

Answer 1

Sachin's age today = 30 years.

Sachin's age 10 years back = 20 years.

Ajay's age 10 years back = 10 years.

Ajay's age today =20 years

Answer 2

Sachin’s age——> s
Ajay’s age——->a
So s-10=2(a-10) or 2a-s=10—-(1)
Sachin’s age, s is 40-10=30 years
So from (1),
2a=s+10=30+10=40
And a=20

So Sachin is 30 years old and Ajay is 20 years old