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Mathematics, 09.04.2020 19:26 aalexissm

Sammy can paint the house by himself in 15 hours. With Nolan's help, it only takes 9 hours.
How long would it take for Nolan to paint the house by himself?

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Sammy can paint the house by himself in 15 hours. With Nolan's help, it only takes 9 hours.
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