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Rob can tar a roof in nine hours.One day his friend Kayla helped him and it only took hime 4.74 hours. How long would it take Kayla to do it alone

Rob can tar a roof in nine hours.One day his friend Kayla helped him and it only took hime 4.74 hours. How long would it take Kayla to do it alone
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Rob can tar a roof in nine hours.One day his friend Kayla helped him and it only took hime 4.74 hours. How long would it take Kayla to do it alone

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User SABANTO
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1 Answer

5 votes
9x10.014084507 / 9 + 10.014084507 = 4.74
90.126760563 / 19.014084507= 4.74 4.74 = 4.74

therefore Kayla can do it in 10.01 hrs

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User Pedjjj
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7.9k points
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