Microeconomics · 免费预览
同时运用两种移动：预测方法
当只有一条曲线移动时，价格和数量都可预测；当两条曲线同时移动时，其中一个方向仍可预测，另一个则变得确实难以确定；弄清楚哪个方向可预测、哪个方向不确定，就完成了整个预测。
1. One shift is a complete forecast
One shift is a complete forecast
2. The tug of war logic
The tug of war logic
3. The grid of four cases
The grid of four cases
4. Working an event end to end
Working an event end to end
5. Festival plus new rooms
During a festival week the demand for hotel rooms shifts right, and newly finished hotels shift the supply of rooms right at the same time. What is the best prediction for the equilibrium quantity and price of rooms?
6. Drought plus a health scare
A drought shifts the supply of coffee left, and at the same time a health scare shifts demand left. Which outcome does the grid predict?
7. Rooms rented after the festival
Before a festival week a town rents 400 rooms a night. During the week, demand shifts right and supply shifts right together, and the combined effect adds 40 rooms to the equilibrium quantity. Compute the new equilibrium quantity of rooms per night and write the number.
8. Festival and new hotels
During a festival week demand for hotel rooms shifts right, and at the same time newly finished hotels shift supply right. What can be predicted about the new equilibrium?
9. The double retreat
A recession shifts demand for restaurant meals left, and rising food prices shift supply left at the same time. What is the sure prediction?
10. Rooms after both shifts
A town rents 300 rooms per night. A festival shifts demand right, which alone would raise quantity by 20 percent, and new hotels shift supply right, which alone would raise it by 15 percent. Compute the combined quantity if the effects compound, and write the number.