Question

Coach Johnson is 10 years older than Tim. When Tim started football 3 years ago, Coach Johnson was twice his age. How old is Tim now? EXPLAI IT OUT

Answer 1

Let Tim's present age = x years
Then Coach's age = x + 10

3 years ago
Tim's age = (x - 3) years
and Coach's age = (x + 10 -3) = (x + 7) years

According to the question
(x + 7) = 2*(x - 3)
x + 7 = 2x - 6
7 + 6 = 2x - x
13 = x

So Tim's present age = 13 years