Pipe A, working alone, can fill a tank in 12 hours. Pipes A and B, working together, can fill the tank in 8 hours. In how many hours, working alone, can pipe B fill the tank ?
A. 8 hrs
B. 12 hrs
C. 16 hrs
D. 20 hrs
E. 24 hrs![]()
A. 8 hrs
B. 12 hrs
C. 16 hrs
D. 20 hrs
E. 24 hrs
