5 persons can prepare an admission list in 8 days working 7 hours a day. If 2 persons join them so as to complete the work in 4 days, they need to work per day for :

5 persons can prepare an admission list in 8 days working 7 hours a da

1.	5 persons can prepare an admission list in 8 days working 7 hours a day. If 2 persons join them so as to complete the work in 4 days, they need to work per day for :
A.	10 hours
B.	9 hours
C.	12 hours
D.	8 hours
Answer» B. 9 hours

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5 persons can prepare an admission list in 8 days working 7 hours a day. If 2 persons join them so as to complete the work in 4 days, they need to work per day for :

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