A cistern is normally filled in 8 hours but takes two hours longer to fill because of a leak in its bottom.
Question 1:
A cistern is normally filled in 8 hours but takes two hours longer to fill because of a leak in its bottom. If the cistern is full, the leak will empty it in?
A.16 hrs
B.20 hrs
C.25 hrs
D.16 hrs
FeedbackWork done by leak in 1 hour = (1/8 - 1/10) = 1/40 The leak will empty the cistern in 40 hours.
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