Building Fences

Building Fences

If it takes 4 people 2 days to build 4 fences, how long will it take 16 people to build 24 fences?

Scroll down for a clue and further down for the answer.

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Clue: 16 people can build 16 fences in 2 days.

Scroll down for the answer.

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Answer: It will take 3 days.

We are told that 4 people can build 4 fences in 2 days.

Scaling the number of people up…16 people can build 16 fences in 2 days.

Reducing this to one day…16 people can build 8 fences in 1 day.

Adding together the last two statements…16 people can build 24 fences in 3 days.



* This article was originally published here

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