SOLUTION: Working together, two pumps can drain a certain pool in hours. If it takes the older pump hours to drain the pool by itself, how long will it take the newer pump to drain the poo
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Question 623313: Working together, two pumps can drain a certain pool in hours. If it takes the older pump hours to drain the pool by itself, how long will it take the newer pump to drain the pool on its own? Answer by ankor@dixie-net.com(22740) (Show Source):
