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25 August, 15:30

A drawer contains quarters and nickels. there are 200 total coins valuing $30.00. think about a system of equations that can be used to represent the number of quarters and nickels and then think through using substitution to solve the system of equations. how many nickels are in the jar?

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  1. 25 August, 16:06
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    A) n + q = 200

    B).05n +.25q = 30.00

    Multiplying equation A) by -.05

    -.05n -.05q = - 10 then adding it to B)

    .05n +.25q = 30.00

    .20q = 20.00

    100 quarters = 20 dollars

    100 nickels = 10 dollars
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