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OpenStudy (sammie):
there are 67 coins, only nickels and dimes. the amount is $4.20. how many nickels and dimes are there?
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OpenStudy (anonymous):
x = dimes y = nickels x + y = 67 0.1x + 0.05y = 4.20 use elimination
OpenStudy (sammie):
thank you so much!
OpenStudy (anonymous):
:)
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