Dree7936 Dree7936

08-06-2018
Mathematics

contestada

How many nickels and dimes are in $5.20 if there are six times more nickels than dimes?

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08-06-2018

n=6*d
0.05*n + 0.10*d = 5.20
0.3d+0.1d =5.20
d = 5.20/0.4 = 13
13 dimes and 78 nickels

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