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A purse contains S 7.55 in quarters and dimes. There are 12 more quarters than dimes. Find the number of quarters and dimes.

 Feb 16, 2020
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D = Dimes 

Quarters =D + 12

 

 

0.10D + 0.25[D + 12] =7.55, solve for D

D = 13 dimes

13 + 12 = 25 quarters

[13 x 0.10] + [25 x 0.25] = $7.55

 Feb 17, 2020

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