Suppose average movie attendance is 250 million when prices are $7 a ticket and 200
million when prices are $9 a ticket. Other things being equal, the data imply that the
elasticity of demand for movie tickets is:
A. elastic, so the increase in price caused total revenue to rise.
B. elastic, so the increase in price caused total revenue to fall.
C. inelastic, so the increase in price caused total revenue to rise.
D. inelastic, so the increase in price caused total revenue to fall.
Answer:
In the early days of the Internet, selling and buying from other individuals were
dangerous because one never knew if the person on the other side of the transaction was
honest. eBay.com became successful because it lessened that problem with its feedback
rating system that let buyers and sellers develop a reputation. eBay.com’s innovation is
an example of overcoming:
A. the free rider effect.
B. negative externalities.
C. positive externalities.
D. an information problem.
Answer: