Given the data in the table what is the relative frequency that the people who prefer hiking also prefer mountains? Round your percentage to the nearest tenth

To find the relative frequency that people who prefer hiking also prefer mountains, we need to divide the number of people who prefer both hiking and mountains by the total number of people in the survey.

According to the table:
- 30 people prefer hiking
- 20 people prefer mountains
- 10 people prefer both hiking and mountains

So the relative frequency is:
10 people who prefer both hiking and mountains / 30 total people who prefer hiking = 1/3 or 33.3%

Therefore, the relative frequency that people who prefer hiking also prefer mountains is 33.3%.