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A team of eight lumberjacks cut an average of 15,000 cubic feet of timber in a week. How many cubic feet will four lumberjacks cut in four weeks?
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Assuming linearity, you have half as many lumberjacks working for four times as long, meaning that you have twice as many man-hours, so the amount of timber they can cut is twice as much, or 30,000 cubic feet. But the assumption of linearity is questionable, as more people may get in each others&rsquo; way, or more people may be able to achieve division-of-labor efficiencies that fewer people cannot achieve. The classic example of non-linearity is that the fact that one woman can make a baby in 9 months does not mean that 9 women can make a baby in a month.

https://www.quora.com/A-team-of-eight-lumberjacks-cut-an-average-of-15-000-cubic-feet-of-timber-in-a-week-How-many-cubic-feet-will-four-lumberjacks-cut-in-four-weeks
by Diamond (89,036 points)

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