Ask Question
13 March, 23:26

A collection of dimes and quarters total cost $3.55. There are 25 coins in all. how many quarters are there?

+1
Answers (1)
  1. 14 March, 00:18
    0
    D + q = 25 ... d = 25 - q

    0.10d + 0.25q = 3.55

    0.10 (25 - q) + 0.25q = 3.55

    2.50 - 0.10q + 0.25q = 3.55

    -0.10q + 0.25q = 3.55 - 2.50

    0.15q = 1.05

    q = 1.05 / 0.15

    q = 7 < = = = there are 7 quarters

    d + q = 25

    d + 7 = 25

    d = 25 - 7

    d = 18 ... and 18 dimes
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “A collection of dimes and quarters total cost $3.55. There are 25 coins in all. how many quarters are there? ...” in 📙 Mathematics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers