Brain Teasers
Walls
Mad Ade has hired some builders to build a series of walls between sections of a large garden. There was just one more wall to be built than there were men in the group, and the number of hours the whole job took was one less than the number of men in the group. Assuming that all the walls were equal in size, and that any man on the team could build one wall by himself in exactly five hours and 15 minutes, how many men were in the group?
Answer
There were seven men in the group,who built eight walls in six hours.
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