Mathematics, 04.12.2020 06:20, pilarmonsivais

Hi can someone help me with this word problem? One pump can empty a swimming pool in 4 hours while a second pump can empty the same pool in 5 hours. How many hours long will it take the two pumps working together to drain the pool? Round your answer to the nearest tenth.

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Hi can someone help me with this word problem? One pump can empty a swimming pool in 4 hours while...