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1. |
Pipe A fills the cistern in half an hour and pipe B in 40 minutes, but owing to a crack in the bottom of the cistern it is found that pipe A now takes, 40 minutes to fill the cistern. How long will B take now to fill it and how long will the crack take to empty it ? |
A. | The leak empties in 1 hour and B fills in 2 hours |
B. | B fills in an hour and the leak empties in 2 hours |
C. | B fills in an hour and the leak empties in an hour |
D. | Data inadequate |
Answer» C. B fills in an hour and the leak empties in an hour | |