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Mathematics, 27.09.2019 23:30 moneyyfletcher

It takes sam 3 hours to do all of the yard work, but it takes his brother carl only 2 hours. how long, in hours, would take them to do the yard work if they work together?

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It takes sam 3 hours to do all of the yard work, but it takes his brother carl only 2 hours. how lon...
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