A certain number of men can finish a piece of work in 100 days. If, there were 10 men less, it would take 10 days more for the work to be finished. How many men were there originally?
Solution
Correct Answer: Option D
men and the days needed are inversely proportional x = men days = 100 x-10 = men days = 110 100x = 110(x-10) (inverse proportion) solving for x 10x = 1100 x = 110
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