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November 14 2017
Question A group of workers can do a task in 24 days. However as 7 of them were absent it taken 30 days to complete the work. How many people actually worked on the job to complete it?
Answer

Let the originalnumber of workers in the group be 'x'

Therefore, actual number of workers = x - 7

We know that the number of manhours required to do the job is the same in both cases.

Therefore, x(24) = (x - 7)*30

24x = 30x - 210

6x = 210

x = 35

therefore, the actual number of workers who worked to complete the job = x - 7 = 35 - 7 = 28

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