A company audit showed that of 867 bills that were sent out, 565 were paid on time, 122 were paid up to 30 days late, 75 were paid between 31 and 90 days late, and 105 remained unpaid after 90 days. One bill is selected at random. a) What is the probability that the bill was paid on time? _______________________ b) What is the probability that the bill was paid, but it was paid late?________________ c) What is the probability that the bill was unpaid after 90 days? __