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17 December, 10:49

A collection of dimes and quarters is worth $6.50. There are 35 coins in all. How many dimes are there?

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Answers (2)
  1. 17 December, 12:10
    0
    15 dimes

    20 quarters=5$ + 15 dimes = 1.50 which = 6.50 and 35 coins
  2. 17 December, 14:48
    0
    The answer to your problem is 15 if you need work here it is

    x=Quarters y=Dimes

    so the total number of coins is 35 the other equation is

    .25x+.1y = 6.5

    Now we can solve for x and y easily

    y=35-x

    We can substitute the into the other equation

    .25x+.1 (35-x) = 6.5

    Lets Simplify it

    .15x=3.5=6.5

    .15x=3

    x=20

    Now we can sub stitute x=20 back into the first equation to get y and if we get x+y=35 then 20+y=35 we know that there are 15 dimes left over so 20+15=35
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