Problema Solution
Matthew is 3 times as old as Jenny. In 7 years,he will be twice as old as she will be than. how old is each now?
Answer provided by our tutors
Let J = Jenny's age; then 3J = Matthew's age.
We have
2(J + 7) = 3J + 7
2J + 14 = 3J + 7
J = 7
3J = 21
Jenny is 7 years old; Matthew is 21 years old.