A) 60
B) 70
C) 38
D) 50
E) None of these
Correct Answer: B
Solution :
Let initially there be x men. Then, \[(x+10)\] men can finish the work in\[(80-10)=70\] days. Now, by formula, \[{{M}_{1}}\times {{D}_{1}}={{M}_{2}}\times {{D}_{2}}\] \[80\times x=(x+10)\times 70\] or,\[80x=70x+700\] or,\[10x=700\] \[\therefore \]\[x=70\] menYou need to login to perform this action.
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