Problema Solution
Matthew is 3 times as old as Jenny. In 7 years, he will be twice as old as she will be then. How old is each now?
Answer provided by our tutors
let 'x' represent Jenny's age, then '3x' represents Matthew's age
2(x+7) = 3x+7
2x + 14 = 3x + 7
7 = x
3*7 = 21
Jenny is 7, Matthew is 21