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a purse contains $2.95 in quarters and dimes. there are 9 more quarters than dimes. find the number of quarters and dimes.

Respuesta :

there are 11 quarters and 2 dimes in the purse
texaschic101
0.25q + 0.10d = 2.95
q = d + 9

0.25(d + 9) + 0.10d = 2.95
0.25d + 2.25 + 0.10d = 2.95
0.25d + 0.10d = 2.95 - 2.25
0.35d = 0.70
d = 0.70/0.35
d = 2 <=== 2 dimes

q = d + 9
q = 2 + 9
q = 11 <=== 11 quarters

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