Question

Pipes A and B can empty a tank in 6 hours and 16 hours, respectively. C is a filling pipe. All the three pipes were opened together. They took 80 minutes to empty 5/18th of the tank. Pipe C alone can fill the tank in:

• A. 48 hours
• B. 36 hours
• C. 42 hours
• D. 40 hours

Answer 1

Answer: (A)