Probability of independent events: Decimal answers

Question

Of the people who fished at Clearwater Park today, 48 had a fishing license, and 12 did not. Of the people who fished at Mountain View Park today, 49 had a license, and 21 did not. (No one fished at both parks.)

Suppose that one fisher from each park is chosen at random. What is the probability that the fisher chosen from Clearwater did not have a license and the fisher chosen from Mountain View had a license?

Do not round your answer. 

Answer 1

Probabilities are just the number of times an event occurs divided by the total possible. The probabilities from Clearwater and Mountain View are independent - so you multiply the probability of each separately.

the probability of the person from Clearwater NOT having a license is 12/(48+12)

I'll leave the other one to you.