Economics 15th Edition by James Gwartney,Richard Stroup,Russell Sobel,David Macpherson

تمرين 12

It takes one hour to travel from New York City to Washington, D.C., by air, but it takes five hours by bus. If the airfare is $110 and the bus fare is $70, which would be cheaper for someone whose opportunity cost of travel time is $6 per hour? For someone whose opportunity cost is $10 per hour? $14 per hour?