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25 February, 04:00

Noelle has 198 coins, all nickels and dimes. Noelle has 20 more nickels than dimes. How many of each coin does Noelle have?

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Answers (2)
  1. 25 February, 06:12
    0
    Answer: 109 nickels and 89 dimes

    Step-by-step explanation: 198 minus 20 is 178 and 178 divided by 2 is 89 and 89 plus 20 is 109 so there are 109 nickels and 89 dimes
  2. 25 February, 07:30
    0
    Answer: 109 nickels and 89 dimes

    Steps:

    198 coins in total and the amount of nickels are 20 more than dimes. (n for the amount of nickels, d for the amount of dimes):

    n = 20 + d

    n + d = 198

    Take the first equation and make it into:

    n - d = 20

    Now let's add both equations together:

    n + d + n - d = 218

    2n = 218

    n = 109

    109 - 20 = d

    d = 89
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