Question

Find the indicated probability. Express your answer as a simplified fraction unless otherwise noted. If one of the 255 subjects is randomly selected, find the probability that the person is over 40 given that he or she is a root beer drinker.

A.) 5/17

B.) 6/17

C.) 15/17

D.) 2/5

Answer 1

B) 6/17

Explanation:

P( root beer AND over 40)/P(over 40)

30/(20+30+35)

30/85

6/17