Emma has already read 6 of 20 books on her summer reading list. What percent of the books on her list has she read already?

0.3%

30.0%

333.3%

23.1%

30.0%

To calculate this, you would take the number of books she has read (6) and divide it by the total number of books on her list (20). Then multiply by 100 to get the percentage.

(6/20) * 100 = 30.0%