Byron has 72 coins in his piggy bank. The piggy bank contains only dimes
and quarters. If he has $14.70 in his piggy bank, which equation can be
used to determine q, the number of quarters he has?
(1) 14.70 + 0.25q = 72
(2) 0.10 (q - 72) + 0.25q = 14.70
(3) 0.10 (72 - q) + 0.25q = 14.70
(4) 0.10q + 0.25 (72 - q) = 14.70
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