A wallet contains the same number of pennies, nickels, and dimes. The coins total $1.44. How many of each type of coin does the wallet contain?

1N+5N+10N=144
16N=144
N=144/16
N=9 COINS OF EACH VALUE.
PROOF
1*9+5*9+10*9=144
9+45+90=144
144=144