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Math

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"Jack has a collection of nickels and quarters. He has a total of 50 coins worth $10.30. How many of each coin does he have?" I got the answer of 39 quarters and 11 nickels by trial and error. Can someone tell me the correct way to set the problem up? Thank you.

  • Math - ,

    sure. If there are n nickels, then there must be 50-n quarters, since there are 50 coins in all.

    Now, add up the values of the coins:

    5n + 25(50-n) = 1030
    n = 11

  • Math - ,

    12

  • Math - ,

    ur mommmmm

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