(so) All work is completed 1 man in (big(60times60timesfrac{4}{3}big))days (frac{3}{4})th of the work is carried out by 60 men in 60 days If the work has been further increased by 50%, but the contractor continues to increase the 5 workers o every 2 days, then how many more days are needed over the initial period specified by the client. In 8 days, 100 man-days of work were performed. Now, on the 9th and 10th days, there will be 25 workers. So, in 2 days, they do 50 man-days of extra work. Thus, the work takes 2 more days. A contractor completed a project to complete it in 20 days, which required 5 workers to work continuously every estimated day. But before starting the work, the client wanted to finish them earlier than planned, so the contractor calculated that he had to recharge 5 additional men every 2 days to complete the work in the time desired by the client: leave the number of men who can finish the rest (frac{1}{4}) of the work in the remaining 30 days, x. . (so) 60 x 60 x (frac{4}{3}) = x x 30 x 4 (Rightarrow) x = 40. . . . .

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