$\mathrm{A}, \mathrm{B}$ and $\mathrm{C}$ can do a piece of work and earn $₹45,000$. If $\mathrm{A}$ can do alone in $20$ days while $\mathrm{B}$ can alone in $30$ days and with the help of $\mathrm{C}$ they can do it in $8$ days. What is $\mathrm{C}$'s share of profit?

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.$15$ 

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. $45$ 

A and B working alone can do a work in $20$ days and $15$ days respectively. They started the work together but B left after sometime and A finished the remaining work in $6$ days. Find after how many days from start B left the work?