Question
Mathematics Question on Pipe and Cistern
A tank can be filled by two pipes A and B in 18 minutes and 24 respectively. Another tap C can empty the full tank in 36 mintues. If the tap C is opened 6 minutes after the pipes A and B are opened, the tank will become full in a total of :
A
6 minutes
B
12 minutes
C
18 minutes
D
36 minutes
Answer
12 minutes
Explanation
Solution
The correct option is (B) :12 minutes.