[ A ] 35 

[ B ] 40  
[ C ] 48  
[ D ] 52 
[ A ] 35 

[ B ] 40  
[ C ] 48  
[ D ] 52 
Answer : Option B 
Explanation : 
Let the number of men be x. X men do the work in 60 days. 1 man does the work in 60 X xdays. So, (x+8) men do the work in 50days. 1 man does the work in 50(x+8) days Now,60x = 50(x+8) Or , 60x50x = 400 Or, x=40. 
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