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Two Pipes A and B can separately fill a tank in 2h and 3h respectively. If both the pipes are opened simultaneously in the empty tank, then the tank will be filled in

Two Pipes A and B can separately fill a tank in 2h and 3h respectively. If both the pipes are opened simultaneously in the empty tank, then the tank will be filled in

Solution:

Pipe A can fill in 1h = 1/2

Pipe B can fill in 1h = 1/3

Both Pipe A and B can fill in 1h = 1/2 + 1/3

                                                       = 5/6

Therefore, it will fill the full pipe in = 6/5 h  6/5 *60 = 72 min

                                                              = 1h 12 min


14th February 2019

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RPF Constable Admit Card 2018

Phase

Group

Start Date

End Date

 Phase 1

E

20-12-2018

 22-12-2018

Phase 4

A+B+F

17-01-2019

25-01-2019

Phase 5

C+D

02-02-2019

19-02-2019


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26th January 2019

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