Answer:
Percentage of the garden's flowers that are roses = 60
Explanation:
The ratio of roses to lilies in a garden is 3 to 2.
Let number of roses in the garden be r.
We have
![\frac{\texttt{Number of roses}}{\texttt{Number of lillies}}=(3)/(2)\\\\\frac{r}{\texttt{Number of lillies}}=(3)/(2)\\\\\texttt{Number of lillies}=(2)/(3)r](https://img.qammunity.org/2020/formulas/mathematics/middle-school/zi3ukwm45xlbeho5hbufgjd9ivhs7aybfc.png)
Now we need to find what percentage of the garden's flowers are roses.
![\texttt{Percentage of roses = }\frac{\texttt{Total number of roses}}{\texttt{Total number of flowers}}* 100\\\\\texttt{Total number of flowers}=\texttt{Total number of flowers}+\texttt{Total number of lillies}\\\\\texttt{Total number of flowers}=r+(2)/(3)r=(5)/(3)r\\\\\texttt{Percentage of roses = }(r)/((5)/(3)r)* 100=(3)/(5)* 100=60\%](https://img.qammunity.org/2020/formulas/mathematics/middle-school/roext9n3kf6fktpkrm6r18t0fyw0ecwsh4.png)
Percentage of the garden's flowers that are roses = 60