If 75 persons can perform a piece of work in 12 days of 10 hours each, how
many persons could perform a piece of work twice as large in half the number of days, working 8
hours daily?
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Days hours. Work. Person
12 10. 1. 75
12/10. 10. 2. ?
The number of persons =
75*12*2*10 *2
___________
1.2*1*10*3
= 1000
As 3 person = 2 men
1 person = 2/3 men{efficiency} .
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