SOLUTION: Three pipes are connected to a water tank. One of the pipes can fill the tank in 30 min. The second pipe can fill it in 20 min. The third pipe can fill the tank in 40 min. If t
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-> SOLUTION: Three pipes are connected to a water tank. One of the pipes can fill the tank in 30 min. The second pipe can fill it in 20 min. The third pipe can fill the tank in 40 min. If t
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Question 170779: Three pipes are connected to a water tank. One of the pipes can fill the tank in 30 min. The second pipe can fill it in 20 min. The third pipe can fill the tank in 40 min. If the slowest pipe is shut off after 3 min and fastest is shut off 3 min later, how long will it take the remaining open pipe to finish filling the tank? Answer by scott8148(6628) (Show Source):
