An oil tanker can be emptied by the main pump in 5 hours. An auxiliary pump can empty the tanker in 7 hours. If the main
Posted: Fri Jul 08, 2022 5:32 am
An oil tanker can be emptied by the main pump in 5 hours. An auxiliary pump can empty the tanker in 7 hours. If the main pump is started at 5 PM, when should the auxiliary pump be started so that the tanker is emptied by 9 PM? The auxiliary pump should be started at ]: PM.