An oil tanker can be emptied by the main pump in 4 hours. An auxiliary pump can empty the tanker in 9 hours. If the main

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An oil tanker can be emptied by the main pump in 4 hours. An auxiliary pump can empty the tanker in 9 hours. If the main

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An Oil Tanker Can Be Emptied By The Main Pump In 4 Hours An Auxiliary Pump Can Empty The Tanker In 9 Hours If The Main 1
An Oil Tanker Can Be Emptied By The Main Pump In 4 Hours An Auxiliary Pump Can Empty The Tanker In 9 Hours If The Main 1 (155.77 KiB) Viewed 25 times
An oil tanker can be emptied by the main pump in 4 hours. An auxiliary pump can empty the tanker in 9 hours. If the main pump is started at 5 PM, when should the auxiliary pump be started so that the tanker is emptied by 8 PM? The auxiliary pump should be started at PM.
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