SOLUTION: It takes 4 workers 9 days to lay a stretch of road. How long does it take 6 workers to lay the same stretch of road?
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Question 765113: It takes 4 workers 9 days to lay a stretch of road. How long does it take 6 workers to lay the same stretch of road?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
It takes 4 workers 9 days to lay a stretch of road
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Half that number of workers will take twice as long, so
It takes 2 workers 18 days to lay a stretch of road
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3 times that number of workers will take 1/3 of that time, so
It takes 6 workers 6 days to lay a stretch of road
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You can also do an inverse variation:
and
( is days to lay the road )
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