Z zhel321 New member Sep 17, 2009 #1 It takes 9 large pipes 8 hours to drain the pond. On the contrary, it takes 6 small pipes 16 hours to drain a pond. How long will it take 3 large pipes and 5 small pipes to drain the pond?
It takes 9 large pipes 8 hours to drain the pond. On the contrary, it takes 6 small pipes 16 hours to drain a pond. How long will it take 3 large pipes and 5 small pipes to drain the pond?
