Problema Solution
John is presently 12 years older than Fred. Four years ago John was twice as old as Fred. How old is each now?
Answer provided by our tutors
let 'x' represent John's age, then 'x-12' represents Fred's age
(x-4) = 2(x-12-4)
x - 4 = 2x - 32
28 = x
28-12 = 16
John is 28, Fred is 16