algebra 1
posted by kelly .
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?

algebra 1 
drwls
D + Q = 100
10 D + 25 Q = 1405
Solve.
10 D + 10 Q = 1000
15 Q = 405
etc.
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