A jet travels 2824 miles against a jetsream in 4 hours and 3384 miles with the jetstream in the same amount of time. What is the rate of the jet in still air and what is the rate of the jetstream

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