A) \[13\frac{1}{3}\,\,\text{h}\]
B) 10 h
C) 6 h
D) \[3\frac{1}{3}\,\,\text{h}\]
Correct Answer: B
Solution :
Part of cistern emptied in 1 h \[=\frac{1}{5}-\frac{1}{8}=\frac{8-5}{40}=\frac{3}{40}\] \[\therefore \]\[\frac{3}{40}\]part is emptied in 1 h \[\therefore \]\[\frac{3}{4}\]part is emptied in \[\frac{40}{3}\times \frac{3}{4}=10\,\,h\]You need to login to perform this action.
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