Aptitude/Aptitude Pipes and Cisterns Mcq set 1 MCQs :- multiple choice questions and answers. e.g Aptitude MCQS,Aptitude Mock Tests , Aptitude Practice Papers ,Aptitude Sample Test,Aptitude Sample questions

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Question 1: Two pipes A and B can fill a cistern in 20 and 30 minutes respectively, and a third pipe C can empty it in 40 minutes. How long will it take to fill the cistern if all the three are opened at the same time?

19 1/7 min

15 1/7 min

17 1/7 min

7 1/7 min

Total MCQS Questions are 51 in this paper Aptitude Pipes and Cisterns Mcq set 1
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