Suppose that your demand schedule for compact discs is as follows

Suppose that your demand schedule for compact discs is as follows:
PRICE        QUANTITY DEMANDED(INCOME  $10,000)   QUANTITY DEMANDED    (INCOME  $12,000)
$ 8                                40                                                                                              50
10                                 32                                                                                               45
12                                 24                                                                                                30
14                                 16                                                                                                 20
16                                8                                                                                                    12
a. Use the midpoint method to calculate your price elasticity of demand as the price of compact discs increases from $8 to $10 if

(i) your income is $10,000, and

(ii) your income is $12,000.
b. Calculate your income elasticity of demand as your income increases from $10,000 to $12,000 if

(i) the price is $12, and

(ii) the price is $16.

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