math
posted by brit on .
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?
Numerical Answers Expected!

J = T + 10
J3 = 2(T3)
Substitute T+10 for J in second equation and solve for T. Insert that value into the first equation and solve for J. Check by inserting both values into the second equation.