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Posted by on Friday, December 7, 2012 at 9:00pm.

John has 11 more quarters than dimes. He has a total of $7.65. How many quarters and dimes does he have?

  • Math - , Friday, December 7, 2012 at 9:44pm

    Q = 11 + D
    25Q + 10D = 765

  • Math - , Saturday, December 8, 2012 at 12:14pm

    Substitute 11+D for Q in second equation and solve for D. Insert that value into the first equation and solve for Q. Check by inserting both values into the second equation.

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