GAT Subject
Engineering
Computer Science Civil Engineering Chemical Engineering Agricultural Engineering Mechanical Engineering Electronics and Communication
26. | A cistern can be filled by a tap in 4 hours while it can be emptied by another tap in 9 hours. If both the taps are opened simultaneously, then after how much time will the cistern get filled? | |
A. | 4.5 hrs | |
B. | 5 hrs | |
C. | 6.5 hrs | |
D. | 7.2 hrs | |