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30 January, 02:58

Lisa has quarters and dimes. she has four more quarters than dimes. if she has a total of $3.80, how many quarters and dimes does she have?

(let statement)

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  1. 30 January, 03:22
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    8 dimes ($0.80) 12 quarters ($3)

    Step-by-step explanation:

    D = dimes

    D+4 = quarters

    0.10D + 0.25 (D+4) = 3.80

    0.10 D + 0.25D + 1=3.80

    0.35D = 2.80

    Divide both sides by 0.35

    D=8

    0.10*8 = 0.80

    3.80-0.80 = 3.00 ($3)

    $ 3.00/0.25 = 12 quarters
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