Question 1152747
<pre>
q = number of quarters
d = number of dimes = q+7


25q + 10(q+7) = 350   (cents)
35q + 70 = 350
35q = 280
q = 280/35 = 8  --->  d = 15

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Ans: 8 quarters and 15 dimes
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Check:
 25(8) + 10(15) = 200 + 150 = 350  (= $3.50) (ok)