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2 April, 23:23

Justin has only nickels and quarters in his piggy bank he's 49 coins total for combined value of $8.85 how many of each type of coin does he have

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  1. 2 April, 23:52
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    17 nickels and 32 quarter.

    Here's my work!

    x = nickels

    y = quarters

    x + y = 49

    .05x +.25y = 8.85

    x + y = 49. = y = - x + 49

    .05x +.25 (-x + 49) = 8.85

    .05x + -.25x + 12.25 = 8.85

    -.2x + 12.25 = 8.85

    - 12.25. - 12.25

    -.2x = - 3.4

    :-.2x. : -.2x

    x=17

    x + y = 49

    17 + y = 49

    -17. - 17

    y=32
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