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Amanda has a total of 80 nickels and quarters. The total value of the change is $7.60. How many nickels does she have?

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  1. 16 June, 17:26
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    She has 62 nickels and 18 quarters.

    You can find this by setting up the following system of equations:

    x + y = 80 (total number of coins)

    5x + 25y = 760 (total number of cents)

    Then you can mutliply the first equation by - 5 to get the x values to cancel out. You can then solve this for y.
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