Q. Pipes A and B, when working together, can fill an empty tank in 8 hours. If B is stopped after 2 hours, it will take a total of 11 hrs to fill the tank. How long would it take A to fill the empty tank alone?
A) 12 hrs
B) 15 hrs
C) 16 hrs
D) 13 hrs
✔ Correct Answer: 12 hrs
Exam Insight
-