SOLUTION: Fred shovels one sidewalk in four minutes, and John shovels one sidewalk in three minutes. How long will it take them to shovel a sidewalk if they work together?
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Question 567455: Fred shovels one sidewalk in four minutes, and John shovels one sidewalk in three minutes. How long will it take them to shovel a sidewalk if they work together? Answer by nyc_function(2741) (Show Source):
