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17 January, 16:38

A washer and a dryer cost $911 combined. The washer costs $39 less than the dryer. What is the cost of the dryer?

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  1. 17 January, 17:38
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    Sum and difference problem, where difference = larger number - smaller number.

    The larger number is (sum+difference) / 2.

    The smaller number is (sum - difference) / 2

    Therefore the dryer costs (911+39) / 2=475

    The washer costs (911-39) / 2=436
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