A contract is to be completed in 50 days and 105 men were set to work, each working 8 hour a day. After 25 days, 2/5th of the work is finished. How many additional men should be employed so that the work may be completed on time, each man now working 9 hour a day?

A contract is to be completed in 50 days and 105 men were set to work, each working 8 hour a day. After 25 days, 2/5^th of the work is finished. How many additional men should be employed so that the work may be completed on time, each man now working 9 hour a day?
1). 34
2). 36
3). 35
4). 37

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