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20 June, 07:28

How to write Regina has 120 coins, all quarters and dimes. she has 10 more dimes than quarters. How many quarters and dimes does she have as an equation

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  1. 20 June, 07:55
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    So Regina has 120 coins=total

    120=total

    we will use q=number of quarters and d=number of dimes

    120=d+q

    she has 10 more dimes than quarters

    d=q+10

    so if we susitute this into the equation then we get

    120 = (q+10) + q

    add like terms

    120=2q+10

    subtract 10 from both sides

    110=2q

    divide both sides by 2

    55=q

    she has 55 quarters

    subtitute into second equation

    d=10+55

    d=65

    dimes=65

    quarters=55
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