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A restaurant bill of $2.85 was paid using quarters and dimes only. If twice the number of quarters is 6 less than 4 times the number of dimes, how many quarters were used?
6 years ago

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ISABELLA
HELP MEEEEEEEEEEEEEEEEEEEEE
6 years ago
oobleck
# quarters: x
value of quarters: 25x
# dimes: d
value of dimes: 10d
and, 2q = 4d-6, so
q = 2d-3
10d+25q = 285
Now just solve for q
6 years ago

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