1.

Two taps can fill a cistern in 10 hours in 8 hours respectively a third tapthat can empty it in 15 hours how long will it take to fill the empty cistern ifall of them are opened together?

Answer»

Two taps can fill a cistern in 10 hours in 8 hours respectively a third tapthat can empty it in 15 hours how long will it take to fill the empty cistern ifall of them are opened together?



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