An oil tanker can be emptied by the main pump in 4 hours and by an auxiliary pump in 9

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Latest exam Aptitude Question SOLUTION: An oil tanker can be emptied by the main pump in 4 hours and by an auxiliary pump in 9 hours. If the main pump is started at 9 a.m., when should the auxiliary pump be started so th

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(#M40100048) EXAM Numerical Ability question Keep an EYE

An oil tanker can be emptied by the main pump in 4 hours and by an auxiliary pump in 9 hours. If the main pump is started at 9 a.m., when should the auxiliary pump be started so that the tanker is emptied by noon?

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