Question

Hello!

Here is a question.
Marry is twice as old as Jhon and half as old as bob.ln 22 years time bob will be twice as old as John.find marry's age.

Answer 1

John --- x yrs

Mary --- 2x yrs
Bob --- 4x yrs

in 22 years from now:

John: x+22
Mary: 2x+22
bob: 4x+22

4x+22 = 2(x+22)
4x+22 = 2x + 44
2x=22
x=11

So Mary is now 22