Question 213982
There were equal numbers of nickels and quarters
n = q
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and twice as many half-dollars as quarters. 
h = 2q
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If she found $2.60 in all, how many of each denomination of coin did she find? 
Value equation: 5n + 10d +25q + 50h = 260 cents
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Replace n by q
Replace h by 2q
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Solve
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Cheers,
Stan H.