Question

Frank is 15 years younger then john. in 5 years john will be twice as old as frank. how old will frank be in four years

Answer 1

Hey, sup!

As per the question,

Let Frank's present age be x years.
So John's present age will be x+15 years .

In 5 years.
Frank's age= x+5.
John's age= x+15+5=x+20.

x+20=2(x+5).
=>x+20=2x+10.
=>2x-x=20-10.
=>x=10.
Hence, Frank's present age is 10 years.

In four years Frank will be 10+4= 14 years old.

Hope it helps.