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Posted by on Tuesday, April 9, 2013 at 6:07pm.

Andrew has 12 coins, all dimes and nickels, and they add up to $1.00. How many nickels does he have?

  • Math - , Tuesday, April 9, 2013 at 6:13pm

    d = number of dimes
    n = number of nickels

    d + n = 10
    .10d + .05n = 1.00

    Solve the first equation for n or d and substitute it into the second equation.

  • Math - , Wednesday, April 24, 2013 at 8:19pm

    7 quarters 3 dimes and 3 nickels

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