13.9
9.A friend comes to you and says, "Microsoft is worth $115 billion and General Motors is worth $42.4 billion. Yet, Microsoft only earns $2.25 billion per year while GM earns $4.73 billion per year. How can a company that earns about half as much of GM be worth almost 3 times as much as it?!" What do you tell your friend? "Get a life." is not a good answer. (10 pts)