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5 November, 11:15

Carolyn has $2.55 in her purse in nickels and dimes. The number of nickels is nine less than three times the number of dimes. Find the number of each type of coin.

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  1. 5 November, 12:28
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    Hi, the answer is;

    Answer:

    12 dimes and 27 nickels

    Step-by-step explanation:

    .05N +.1d = 2.55

    N = 3d - 9

    0.05 (3d-9) + 0.1d = 2.55

    0.15d - 0.45 + 0.1d = 2.55

    0.25d = 2.55 + 0.45

    0.25d = 3

    D = 12

    N = 3 (12) - 9

    N = 36 - 9

    N = 27
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