21130
Unique Id: 18284 Edit screen 1 Edit screen 2

DIRECTIONS for the question: Solve the following question and mark the best possible option.

Two taps can separately fill a cistern in 20 min and 30 min. respectively and when waste pipe is open; they can together fill it in 36 minutes. The waste pipe can empty the full cistern in
A)
18 min
B)
24 min
C)
30 min
D)
None of these

Question include in Following Tests :
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