14 men can do a work in 18 days, 15 women can do a work in 24 days. If 14 men work for first three days and 10 women work after that for three days, find the part of work left after that?
1). $\frac{3}{4}$
2). $\frac{1}{4}$
3). $\frac{1}{2}$
4). $\frac{1}{6}$