Question 818181: Michelle has 28 coins with a value of $4.40. If the coins are all nickels and quarters, how many of each type coin does she have?
Answer by TimothyLamb(4379)   (Show Source):
You can put this solution on YOUR website! n + q = 28
q = 28 - n
5n + 25q = 440
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5n + 25q = 440
5n + 25(28 - n) = 440
5n + 700 - 25n = 440
20n = 260
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n = 13
q = 15
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