An oil tanker can be emptied by the main pump in 5 hours. An auxiliary pump can empty the tanker in 8 hours. If the main pump is started at 6 PM, when should the auxiliary pump be started so that the tanker is emptied by 10pm? The auxiliary pump should be started at what time?
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auxiliary pump should be started at 2pm...
Step-by-step explanation:
time taken by auxiliary pump to empty a oil tanker into it = 8 hours
time in which tank needs to be completely emptied into the pump=10p.m.
So, 10-8=2p.m.
hence, 2P.M.is the answer.....
please mark it as brainlliest and thank you.....
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