1.

Two pipes P and Q can fill a cistern in 3 and 6 minutes respectively, while an empty pipe R can empty the cistern in 4 minutes. All the three pipes are opened together and after 2 minutes pipe R is closed. Find when the tank will be full

A. 3 minutes
B. 6 minutes
C. 5 minutes
D. 8 minutes
Answer» B. 6 minutes


Discussion

No Comment Found

Related MCQs