SOLUTION: In Ngomongo village a piece of work can be completed by 45 workers in 10 days .They work for 4 days after which 15 workers were laid off, how many days will it take the remaining w
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Question 984793: In Ngomongo village a piece of work can be completed by 45 workers in 10 days .They work for 4 days after which 15 workers were laid off, how many days will it take the remaining workers to complete the work ? Found 4 solutions by srinivas.g, macston, josmiceli, MathTherapy:Answer by srinivas.g(540) (Show Source):
You can put this solution on YOUR website! work done by all 45 workers in 1 day = 1/10 of work
work done 1 worker in 1 day = (1/10)(1/45) of work
=1/450 of work
after 4 days , 15 workers laid off
it means that 45 workers works for 4 days
work done by 45 workers for 4 days = 4*45 /450
= 4/10 of work
after 4 days , no of workers available = 45-15 =30
work remaining =1 -4/10
=6/10 of work
30 workers will finish the remaining work in = 30/(6/10)
= 50 days
solution : 50
You can put this solution on YOUR website! .
The job requires (45 workers)(10 days)=450 worker-days
In 4 days: (45 workers)(4 days)=180 worker-days
Still needed{ 450 worker-days - 180 worker-days=270 worker days
There are (45-15) 30 workers left.
For 30 workers to complete 270 worker-days:
(270 worker-days)/(30 workers)=9 days
.
ANSWER: It will take 9 days to complete the work.
You can put this solution on YOUR website! A piece of work can be completed by 45 workers in 10 days
1 worker would take days to do the work
The rate of working for 1 worker is:
[ 1 job ] / [ 450 days ]
The fraction of the job that gets done in 4 days is:
-----------------------
That leaves as a
fraction of the job that is left
----------------------------
There are workers left
Let = days for the remaining work to be finished
[ rate ] = [ rate ]
The remaining workers will take 9 days
to complete the work
Hope I got it!
You can put this solution on YOUR website!
In Ngomongo village a piece of work can be completed by 45 workers in 10 days .They work for 4 days after which 15 workers were laid off, how many days will it take the remaining workers to complete the work ?
The remaining 30 (45 - 15) workers will do the remaining (1 - ) of work in days
