Step by step explanation:
If in her family 3 of them do not like roller coasters and there are a total of 5, then there are 2 who do like it.
We can write the following proportion:
![(x)/(100)=(2)/(5)](https://img.qammunity.org/2023/formulas/mathematics/college/acw1wl5igph4rf42w39zreojb8lw7fw7w0.png)
There are 2 out of 5 who like it and we want to find the percentage:
![x=(2\cdot100)/(5)=(200)/(5)=40](https://img.qammunity.org/2023/formulas/mathematics/college/izeh4e8gywngu90f3oera7nmny7t77sctb.png)
Answer:
40%