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A big cruise ship leaked 9000 barrels of water and used three pumps. The first pump pumps 80 degrees per minute, and the second pump pumps 90 barrels per minute.
16 barrels
The water pump pumped 14*50*2= 1400 barrels.
There were 600 barrels of water at first.
So * * * always leaks into 1400-600=800 barrels.
800 barrels are leaked in 50 minutes, and 800/50= 16 barrels per minute.