SOLUTION: 120 People does work in 90 days how many people need to same work in 40days?
Algebra.Com
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
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
120 People does work in 90 days how many people need to same work in 40days?
---
Note # of people and # of days are inversely related.
p = k/d
----
Solve for "k" using "120 People does work in 90 days":
120 = k/90
----
k = 90*120
------
Equation:
p = (90*120)/d
------
how many people need to same work in 40days?
--
p = (90*120)/40
---
# of people = 3*90 = 270
==============================
Cheers,
Stan H.
==================
RELATED QUESTIONS
If 8 people do a piece of work in 12 days, how many people will be needed to do the same... (answered by scott8148)
60 people can finish a work in 15 days. After doing 6 days of work, 12 people added to... (answered by ankor@dixie-net.com,richwmiller)
120 men can do a work in 90 days,how many more men required to complete the same work in... (answered by fractalier)
10 people can do half of the work in 7 days ? how many days will take to do the same work (answered by mananth)
If 20 people did one work for 30 days to complete, then if the same work done by 25... (answered by richwmiller)
A can do a certain job in 40days which b alone can do it in 30 days .A started the work... (answered by flame8855)
It takes 30 people 60 working days to build a small bridge. How many people are needed... (answered by stanbon)
It took 6 people to paint several offices in 5 days. How many more people need to be... (answered by josgarithmetic,greenestamps,ikleyn,jayesh.nandhu)
Suppose that m people can do a task in d days. Assuming that they all work at the same... (answered by mananth)