Question

At Taft high school 59% of all students participate in after school sports and 23% participate in both after school sports and volunteer activities. What is the probability that a student participates in volunteer activities given that the student participates in after school sports. A. 82% B. 36% C. 59% D. 39%

Answer 1

The answer is D or 39% 

Answer 2

An easy way to remember this without all the confusing symbols is the formula:

Both/one = other one

Meaning the both of the probabilities combined divided by one of the probabilities = the other probability.

.23/.59 = other one
0.389 = other one
0.39 = other one

Hope this helps!