First we need to know how many gallons the cylinder can hold, to determine this we use the rule of three:
![\begin{gathered} 231\text{ cubic inches}\rightarrow1\text{ gallon} \\ 5775\text{ cubic inches}\rightarrow x \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/rvd2myi5va390ffg38m4q6a3yc5s45exib.png)
then:
![x=(5775\cdot1)/(231)=25](https://img.qammunity.org/2023/formulas/mathematics/college/3l8s4e0bz5f9do0rjab2ylq5wvvajbsung.png)
Hence the cylinder can hold 25 gallons of water.
We know that every day it leaks 2 gallons of water, using the rule of three again we have:
![\begin{gathered} 1\text{ day}\rightarrow2\text{ gallons} \\ x\rightarrow25\text{ gallons} \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/zxdbp1e3dnc17modac210dydfecu9u7p0y.png)
then:
![x=(25\cdot1)/(2)=(25)/(2)=12.5](https://img.qammunity.org/2023/formulas/mathematics/college/da8ollchm0lsp3e5fbekq7afrk6aeboted.png)
Therefore it will take 12.5 days to fill the cylinider