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Math

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The value of 25 coins, consisting of dimes and quarters, is $ 3.55. How many dimes are in the collection?

  • Math -

    Let x = # of dimes and y = # of quarters

    x + y = 25

    y = 25-x

    10x + 25y = 355

    Substitute 25-x for y in last equation and solve for x.

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