Use some thinking to answer the following question. Pipes A and B can fill a cistern in 8 and 24 minutes respectively. They are opened an alternate minutes. Find how many minutes, the cistern shall be full?
Options:
(A) 10
(B) 26
(C) 12
(D) 24
(E) 48
1/8 + 1/24 = 1/6
6 * 2 = 12 So the final answer is (C).