Question

The ages of Arun and Rahul are in the ratio 7 : 5.Ten years hence, the ratio of their ages

will be 9 : 7. Find their ages five years from now​

Answer 1

Answer:

Let the present age of A= 7x years

The present age of B= 5x years

After 10 years, their ages will be 

A=7x+10 years and

B=5x+10 years

The ratio of their ages after 10 years is 9:7.

∴5x+107x+10=79

⇒49x+70=45x+90

⇒49x−45x=90−70

⇒4x=20

⇒x=5

∴ Present age of A= 7×5=35 years and present 

age of B= 5×5=25 years.