

MCQOPTIONS
Saved Bookmarks
1. |
Three taps A, B and C can fill a tank in 12, 15 and 20 hours respectively. If A is open all the time and B and C are open for one hour each alternately, the tank will be full in: |
A. | 8 hours |
B. | 6 hours |
C. | 9 hours |
D. | 7 hours |
Answer» E. | |