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6 July, 04:17

A total of $4.80 consisting of dimes and quarters was collected from a soft drink vending machine. If there's one more quarter than there are dimes, find the number of dimes and the number of quarters.

A. 18 dimes; 12 quarters

B. 12 dimes; 13 quarters

C. 13 dimes; 14 quarters

D. 14 dimes; 15 quarters

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Answers (2)
  1. 6 July, 06:30
    0
    Q = d + 1

    4.80 = 0.10d + 0.25q

    4.80 = 0.10d + 0.25 (d + 1)

    4.80 = 0.10d + 0.25d + 0.25

    4.55 = 0.35d

    13 = d

    C. 13 dimes, 14 quarters
  2. 6 July, 07:47
    0
    Step-by-step explanation:

    multipy. 10 by 18 and you get 1.80$ then 12 quarters is 3.00 so 1.80 + 3.00 = 4.80
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