需求與供應（二）：彈性
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31.
Suppose the demand for wheat is elastic. Which of the following will decrease if there is a poor harvest of wheat?
(1)the price of wheat
(2)the total expenditure on wheat
(3)the demand for wheat
(4)the quantity of wheat transacted
32.
| Price | Quantity Demanded (units) | Total Revenue |
|---|---|---|
| $2 | 10 | $20 |
| $4 | 6 | $24 |
| $6 | 4 | $24 |
| $8 | 3 | $24 |
| $10 | 1 | $10 |
The elasticity of demand is unitary over the price range from
33.
When demand increase, which of the following would cause a greater rise in price?
34.
Which of the following would NOT lead to an increase in the total revenue from the sale of a product?
35.
Suppose there is a good harvest of apples this year. Under which of the following conditions will apple growers earn more income?
36.
After the launching of an advertising campaign, both the price and the quantity sold of a product increase. Which of the following statements can explain this?