SOLUTION: if it took 8 builders 25 days to build a house how long would it take 10 builders to do the same job.

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Question 1021596: if it took 8 builders 25 days to build a house how long would it take 10 builders to do the same job.
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
It would require 8*25 = 200 man-days to build the house.
==> %281%2F%28200+mandays%29%29%2A%2810+men%29%2Ax+=+1
<==> x%2F%2820+days%29+=+1
==> x = 20 days.