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2013 UNCO Math Contest II Problems/Problem 7

Revision as of 14:14, 16 October 2014 by Timneh (talk | contribs) (Created page with "== Problem == Suzie and her mom dry half the dishes together; then mom rests, while Suzie and her dad dry the other half. Drying the dishes this way takes twice as long as when ...")
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Problem

Suzie and her mom dry half the dishes together; then mom rests, while Suzie and her dad dry the other half. Drying the dishes this way takes twice as long as when all three work together. If Suzie’s mom takes $2$ seconds per dish and her dad takes $5$ seconds per dish, how long does Suzie take per dish?

Solution

See Also

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