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    tecia_bee's Avatar
    tecia_bee Posts: 2, Reputation: 1
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    #1

    Sep 12, 2011, 05:32 PM
    How do I answer algebra equations involing money?
    My algebra teacher gave me this question.
    Mr.Lynch has 21 coins in nickles and dimes. Their total value is 1.65. How many of each coin does he have?
    Please help me, it's due tomorrow!
    taxesforaliens's Avatar
    taxesforaliens Posts: 649, Reputation: 117
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    #2

    Sep 12, 2011, 06:25 PM
    You need to set up a system of equations and solve it.
    A nickel is worth $0.05, a dime $0.10.
    If you have X nickels and Y dimes, then
    X*$0.05+Y*$0.10=$1.65
    and
    X+Y=21
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