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29 March, 07:29

You have 59 total coins for a total of $12.05. You only have quarters and dimes. How many of each coin do you have?

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  1. 29 March, 08:20
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    Let x = # of quarters let y = # of dimes

    0.25x+0.1y=12.05 x+y=59

    0.25 (59-y) + 0.1y=12.05 x=59-y

    14.75-0.25y+0.1y=12.05 x=59-18

    -0.15y=12.05-14.75 x=41

    -0.15y=-2.7

    y=18

    therefore, you have 18 dimes and 41 quarters
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