In a certain mid-size city, 90% of the high school graduates are from public schools and the other 10% are from private schools.
of the private school grads, 80% go on to complete college, but
only 50% of the public school grads complete college.
What is the probability a randomly selected graduate completes college and
attends a public school?
Remember, when we want to calculate an AND probability, we need to
MULTIPLY
Hint: Construct a tree diagram for this example,