Question 706362: 120 People does work in 90 days how many people need to same work in 40days? Found 2 solutions by josmiceli, stanbon:Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! If 120 people can do 1 job in 90 days,
9 times as many people will take 1/9 as long
to do 1 job, so
1080 people can do 1 job in 10 days
1/4 as many people take 4 times as long
to do 1 job, so
270 people can do the same work in 40 days
You can put this solution on YOUR website! 120 People does work in 90 days how many people need to same work in 40days?
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Note # of people and # of days are inversely related.
p = k/d
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Solve for "k" using "120 People does work in 90 days":
120 = k/90
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k = 90*120
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Equation:
p = (90*120)/d
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how many people need to same work in 40days?
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p = (90*120)/40
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# of people = 3*90 = 270
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Cheers,
Stan H.
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