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Mathematics, 14.04.2020 19:08 happyabbie23

A roofing contractor can shingle a roof in half the time it takes his assistant. Working together, they can shingle the roof in 8 hours. How much time does it take the roofing contractor to finish the job alone

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A roofing contractor can shingle a roof in half the time it takes his assistant. Working together, t...
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