A cistern has 3 pipes A, B and C. A and B can fill it in 3 hours and 4hours respectively while C can empty the completely filled cistern in 1 hour. If the pipes are opened in order at 3, 4 and 5 p.m. respectively, at what time will the cistern be empty? - Study24x7
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A cistern has 3 pipes A, B and C. A and B can fill it in 3 hours and 4hours respectively while C can empty the completely filled cistern in 1 hour. If the pipes are opened in order at 3, 4 and 5 p.m. respectively, at what time will the cistern be empty?

A

6 : 15 p.m.

B

7 : 12 p.m.

C

8 : 12 p.m.

D

8 : 35 p. m.

SSC Banking Railways
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