Multiple Choice Questions on Three taps can fill a tank in 12 hr 15 hr and 20 hr If tap first and second fill 1 2 part of the tan........... for CDS Exam Preparation

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Multiple Choice Questions

Three taps can fill a tank in 12 hr 15 hr and 20 hr If tap first and second fill 1 2 part of the tan...........

Quantitative Aptitude (CDS) Pipes&cistern
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    Three taps can fill a tank in 12 hr,15 hr, and 20 hr. If tap first and second fill 1/2 part of the tank. Third and Second tap will fill the tank in how much time?

    6hours

    Incorrect Answer

    60/7hours

    Correct Answer

    6hours

    Incorrect Answer

    9hours

    Incorrect Answer
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    Explanation:

    A and B fill the tank in 12 hr and 15 hr
     after filling 1/2 part
     let tap second and third take t time
     t(1/15 +1/20)=1
     t(4+3)/60 =1
     t=60/7

    By: bhavesh kumar singh
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