SOLUTION: It takes 56 minutes for 10 people to paint 3 walls.
How many minutes does it take 8 people to paint 9 walls?
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-> SOLUTION: It takes 56 minutes for 10 people to paint 3 walls.
How many minutes does it take 8 people to paint 9 walls?
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You can put this solution on YOUR website! It takes 56 min for 10 people to paint 3 walls, 3 walls require 560 person-minutes, 1 wall requires 560/3=186 2/3 person minutes. 9 walls would require 9(186 2/3)=1680 person-minutes, distributed among 8 people 1680/8=210 minutes
ANSWER It would take 8 people 210 minutes to paint 9 walls.
You can put this solution on YOUR website! 10 people paint 3 walls in 56 min
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1/5 as many people take 5 times as
long to paint 3 walls, so
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2 people paint 3 walls in 280 min
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4 times as many people can paint 3
walls in 1/4 of that time, so
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8 people paint 3 walls in 70 min
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The same number of people can paint
3 times as many walls in 3 times that time, so
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8 people paint 9 walls in 210 min
