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Quantitative Aptitude

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Work and Time

Question
17 out of 25
 

Pipe A fill a tank in 10 hours while pipe B fill it in 12 hours another pipe Q empty it in 20 hours. If all the pipe are opened together then the tank will be filled in



A 7hour
B 8 hour
C 10 hour
D 9
E None of these

Ans. A A 10 hours 6 unit

B 12 hours 5 units

C20 hours 3 units

If work is 60 unit, so in 1 hour they fill ( 6+ 5- 3) = 8 unit

So they fill full tank in hour

Work and Time Flashcard List

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