4.73 Sales of cars and light trucks.

Motor vehicles sold to individuals are classified as either cars or light trucks (including SUVs) and as either domestic or imported. In a recent year, 69% of vehicles sold were light trucks, 78% were domestic, and 55% were domestic light trucks. Let be the event that a vehicle is a car and the event that it is imported. Write each of the following events in set notation and give its probability.