6 men can do a piece of work in 12 days. How many men are needed to do the work in 18 days?

6 men can do a piece of work in 12 days. How many men are needed to do the work in 18 days?

• A. 3 men
• B. 6 men
• C. 4 men
• D. 2 men

 

The correct answer is option C. 4 men. Can you explain this answer in the comments?

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