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August 31, 2015

Homework Help: math

Posted by help me on Thursday, April 26, 2007 at 9:00pm.

marcy has a total of 100 dimes and quarters. if the total value of the coins is $14.05, how many quarters does she have?



You need two equations to substitute into each other. You need one for the total number of coins, and one for the amount.

d=# of dimes
q=# of quarters

d+q=100
.10d+.25q=14.05

Get how I got those equations? See if you can solve the rest. If you can't, post again, and I'll see if I can help you.

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