# math

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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?

• math -

J = T + 10

J-3 = 2(T-3)

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.

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