Question

A cistern has three pipes A, B and C. A and B alone can completely fill the cistern in 4 hours and 3 hours, respectively, and C can empty the completely filled cistern in 2 hours. If all the three pipes are opened simultaneously in the empty cistern, then the cistern will get completely full in:

• A. 16 hours
• B. 12 hours
• C. 14 hours
• D. 10 hours

Answer 1

Answer: (B)