| A certain number of men can do a work in 60 days. If there were eight more men, it could be completed in 10 days less. How many men were there in the beginning? |
A) 70
B) 55
C) 45
D) 40
Correct Answer: D
Solution :
| Let the number of men in the beginning be x. |
| Then, \[\frac{x+8}{x}=\frac{60}{50}\]\[\Rightarrow \]\[\frac{x+8}{x}=\frac{6}{5}\] |
| \[\Rightarrow \]\[6x=5x+40\]\[\Rightarrow \]\[x=40\] |
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