If 10 men can do a piece of work in 12 days, the time taken by 12 men to do the same piece of work will be

If 10 men can do a piece of work in 12 days, the time taken by 12 men to do the same piece of work will be
1). 12 days
2). 10 days
3). 9 days
4). 8 days

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