Only 6 of the trees in a park are at least 30 feet tall what percentage of the trees are under 30 feet tall

Answer 1

The percent is (Part)/(Total) x 100%

1. Part = number of trees over 30 feet = 6
2. Total = total number of trees in the park = ?

Percent of trees over 30 feet tall = (6 trees)/(Total number of trees in the park) x 100%

So if there are 200 trees in the park:

Percent = 6/200 x 100% = 3%

You didn't tell us what the total number of trees in the park is. But now you have the formula so you can compute the answer for yourself.