15 men or 25 women can complete a piece of work in 15 days. If 9 men and 10 women undertake to complete the work, the work will be complete in
1
10 days
2
11 days
3
14 days
4
15 days
15 men or 25 women can complete a piece of work in 15 days. If 9 men and 10 women undertake to complete the work, the work will be complete in