Mathematics, 31.12.2019 14:31 boofpack9775

Steve is a painter. he can paint a house in 20 hours. it takes his assistant 30 hours to paint a house. how long, in hours, would it take them to paint a house working together?

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Steve is a painter. he can paint a house in 20 hours. it takes his assistant 30 hours to paint a hou...

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