A certain number of men can do a work in 40 days. If there were 8 men more, it could be finished in 10 days less. How many men were there lnidally ?

A certain number of men can do a work in 40 days. If there were 8 men more, it could be finished in 10 days less. How many men were there lnidally ?
1). 20
2). 24
3). 30
4). 16

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