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31 May, 09:38

Mary has 30 nickels and dimes worth $2.40. how many nickels does Mary have

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Answers (2)
  1. 31 May, 10:35
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    Mary has 12 nickels $2.40 - 30 dimes = 12 nickels
  2. 31 May, 12:34
    0
    N=nickels

    d=dimes

    n+d = 30

    n+18 = 30

    n = 30-18

    n = 12 (number of nickels)

    therefore Mary has 12 nickels
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