Like a good economist, you calculated the cost of getting your college degree, including the opportunity cost. Suppose that at your university, you will pay $15,000 each year for tuition, $2,500 each year for textbooks, and $8,000 per year for room and board. Before you left for college, your boss at your high-school job offered you a job paying $15,000 per year. Assume that if you decided not to go to college, your parents would let you live at home. Including the opportunity cost, what is the cost of attending four years of college? $