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02-05-2018
Mathematics

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Joe can put up a swing set in 3 hours. Andy can put up a swing set in 5 hours. How long would it take Joe and Andy to put a swing set up if they worked together?

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Аноним Аноним

02-05-2018

Joe = 3 hours

Andy = 5 hours

If they do it together, time needed = (3 x 5) / ( 3 + 5) = 15/8 = 1 7/8 hours.

Answer: 1 7/8 hour

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