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March 28, 2017

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How would I solve this:

Mr. Merrill has 3 times as many nickels as dimes. The coins have a total of $1.50. How many of each coin does he have?

  • math - ,

    n = 3d

    5n + 10d = 150

    Substitute 3d for n in second equation and solve for d. Insert that value into the first equation and solve for n. Check by inserting both values into the second equation.

  • math - ,

    d = number of dimes
    3d = number of nickels
    d + 3d = 1.50

    simplify and solve the equation for d and 3d

  • math - ,

    ooops, I misread question. Sorry

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