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13 July, 03:52

A piggy bank contains 100 coins consisting of nickels and dimes. the total value of the coins is $8.50. How many coins of each type does the bank contain?

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  1. 13 July, 06:31
    0
    the bank contains 30 nickels and 70 dimes.
  2. 13 July, 07:02
    0
    30 Nickels, 70 Dimes

    1 nickel (n) = 5 cents

    1 dime (d) = 10 cents

    total value 850 cents

    5n+10d=850 divide both sides by 5

    n+2d=170 solving with the system of equations we get

    n+2d=170

    n+d=100

    N=30

    D=70
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