Question 649635: Abby has 36 coins, consisting only of dimes and quarters, worth $7.95. How many dimes and how many quarters does she have? Found 2 solutions by checkley79, josmiceli:Answer by checkley79(3341) (Show Source):
You can put this solution on YOUR website! .25X+.10(36-X)=7.95
.25X+3.6-.10X=7.95
.15X=7.95-3.6
.15X=4.35
X=4.35/.15
X=29 NUMBER OF QUARTERS.
36-29=7 DIMES.
PROOF:
.25*29+.10*7=4.95
7.25+.70=7.95
7.95=7.95
You can put this solution on YOUR website! There must be an odd number of quarters, since
the sum ends in a 5. If there was an even number,
it would end in 0.
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I will try 29 quarters. That comes to or $.70. That is 7 dimes coins
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There are 29 quarters and 7 dimes
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