Discussion
A work could be completed in 100 days by some workers. However, due to the absence of 10 workers, it was completed in 110 days. The original number of workers was:
Answer: B
Let the original number of workers be x. Using the man-days formula M1*D1 = M2*D2. \(x \times 100 = (x-10) \times 110 \Rightarrow 100x = 110x - 1100 \Rightarrow 10x = 1100 \Rightarrow x = 110\). The original number of workers was 110.
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