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OpenStudy (anonymous):
ted can sweep a porch in 13 min . one day his friend kim helped and she got it done in 4.95 mins , find how long it would take kim to do it alone ?
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hero (hero):
I believe the question is expressed incorrectly.
hero (hero):
I believe it meant to say that "they both got it done 4.95 mins together".
OpenStudy (anonymous):
i guess my teacher made a typo
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