36 workmen are emplyed to finish a certain work in 48 days.but its is found that in 24 days,only 2/5 work is done.how many more men must be taken to finish the work in time.
A. 16
B. 20
C. 18
D. none of these
Solution(By Examveda Team)
2/5 = (2*100)/5 = 40% work completed in 24 days.
See, 60% more is required to complete in 24 days.
If 36 worker works for rest 48 days then work will be 80% completed.
To complete 20% more work within the time they need 18 workers more.
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24*36*.6=m2*24*.4, m2=54 and extra men needed is 54-36=18 ans