$25$ men and $15$ women can complete a piece of work in $12 \mathrm{days}$. All of them started working together and after working for $8 \mathrm{days}$ the women stop working. $25$ men completed the remaining work in $6 \mathrm{days}$. How many days will it take for completing the entire job if only $15$ women are put on the job?

Ten people can do a work in $30$ days. In how many days, can 15 people complete double the work - 

1.$40$

2. $25$

3. $20$

4. $45$ 

G is twice as fast as S in doing work. If G can do a work in $30$ days less than S, how many days will they take to complete the work together? 

1.$25$
2. $20$
3. $22$
4.$15$ 

X can do 5 times faster work than that of Y and so it takes 36 days less than Y. Find the time in which X alone can complete the work?