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14 June, 06:19

Joey has 5.75 made up of all dimes and quarters. If joey has 38 coins. How many of each each coin does he have?

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Answers (2)
  1. 14 June, 06:39
    0
    Quarters = 13 dimes = 25 is the correct answer
  2. 14 June, 08:07
    0
    D + q = 38 ... d = 38 - q

    0.10d + 0.25q = 5.75

    0.10 (38 - q) + 0.25q = 5.75

    3.80 - 0.10q + 0.25q = 5.75

    -0.10q + 0.25q = 5.75 - 3.80

    0.15q = 1.95

    q = 1.95/0.15

    q = 13 < = = = 13 quarters

    d + q = 38

    d + 13 = 38

    d = 38 - 13

    d = 25 < = = = 25 dimes
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