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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?
5Q:
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?
- 16.5 hrsfalse
- 27.2 hrstrue
- 32.5 hrsfalse
- 43 hrsfalse
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