Question

Can somebody tell me the answer...

Answer 1

P(over 40, root beer drinker) = 30/85 = 6/17

answer
6/17

Answer 2

Since the person is a drinker of root beer, concentrate on the column "root beer."  There are 25+20+30, or 75, people represented in that column, of which 30 are over 40 years of age.  Thus, the probability that a root beer drinker is over 40 is 30/75, or 0.4 (answer)