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1. How long will it take to empty the tank if both the inlet pipe A and the outlet pipe B are opened simultaneously? I.  A can fill the tank in 16 minutes.  II.  B can empty the full tank in 8 minutes.






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  • By: guest on 01 Jun 2017 05.47 pm
     I. A's 1 minute's filling work = 1 16 II. B's 1 minute's filling work = 1 8 (A + B)'s 1 minute's emptying work = 1 - 1 = 1 8 16 16 Tank will be emptied in 16 minutes. Thus, both I and II are necessary to answer the question. Correct answer is (E).
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