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OpenStudy (anonymous):
James has 35 coins in his pocket, all of them dimes and quarters. If he has a total of $5.75, how many quarters does he have ?
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OpenStudy (ivettef365):
you make 2 equations and solve, as follows: x + y = 35 .10x + .25y = 5.75
OpenStudy (ivettef365):
do you know how to solve for y (which is the quarters)
OpenStudy (anonymous):
No I don't
OpenStudy (ivettef365):
ok, you can either multiply the first equation by -.10 and add or you can say that x = 35 -y (now substitute on the second equation the x for (35-y) and solve for y
OpenStudy (anonymous):
So he well have 15 quarters n 20 dimes
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OpenStudy (anonymous):
15 quarters n 20 dimes
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