Inventory for a company is taken hourly from 10 to 4: 00. at the start of the day, the warehouse had 65 boxes. between 10 and 11, 7 boxes were shipped. from 11 to noon, 5 were sent, and another 9 between noon and 1 p. m.

At a pizza shop 70% of the customers order a pizza 25% of the customers order a salad and 15% of the customers order both a pizza and a salad if s customer is chosen at random what is the probability that he or she orders either a pizza or a salad