A contarctor undertakes to make a road in 40 days and employe 25 men. Aftsr 24 days he finds that only one third of the road is made. How many extra men xshould he employee so that he is able to complete the work 4 days earlier
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Answer:
75 men
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Step-by-step explanation:
Let say w is the work to be done
25 men worked for 24 days and completed 1/3 of work
25 * 24 = w/3
w = 1800 mandays
pending work = w - w/3 = 2w/3 = 2*1800/3 = 1200 mandays
work to be completed 4 days earlier so 40-4 = 36 days
24 days already gone so remaining days
= 36-24 = 12 days
men required = 1200/12 = 100
25 men were already working
so additional men required = 100-25 = 75
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