- A24 h
- B6 h
- C15 h
- D12 h
Step-by-Step Solution
Lower half (hole not working): h. Upper half: net per hour, so h. Total h. (24 h wrongly lets the hole work all the time.)
Answer: C) 15 h
The empty cistern has a hole in its side at half its height. Water escapes through the hole only when the water is above it, at the rate shown. Tap A is opened. How long does the cistern take to fill?
Class 8Leaks and Changing PipesDirect and Inverse Proportions
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