84 persons take 56 days to complete a certain task. when 1/4 of the task was completed, one-seventh of the workers left. how many days in all does it take to complete the entire task? A)60 B)64 C)63 D)61 Share with your friends Share 0 Atul Shaw answered this Solution:Total work=Total person×Total daysTotal work=84×56=4704 units14th work=47044=1176 units14th work will take 14×56=14 days.Work left=4704-1176=3528 units17th worker=847=12 workers leftTotal worker remained=84-12=72 daysTherefore, total work remaining=3528 units ; total worker remained=723528=total time×72total time=49Therefore, total time needs to be completed=49+14=63 daysOption C 1 View Full Answer