11) For teenagers, a 10 percent increase in the price of cigarettes leads to a
a.1 percent reduction in the quantity demanded of cigarettes.
b.4 percent reduction in the quantity demanded of cigarettes.
c.10 percent reduction in the quantity demanded of cigarettes.
d.12 percent reduction in the quantity demanded of cigarettes.
12) A consumer consumes two normal goods, sandwiches and milk. When the price of
milk is $0.50 per glass, the consumer purchases 40 glasses. When the price rises to
$0.65 per glass, the consumer purchases 30 glasses. We can use the information
provided by the consumer’s optimum choices to derive the
a.demand curve for milk.
b.demand curve for sandwiches.
c.supply curve for milk.
d.labor-leisure tradeoff.
13) Figure 21-20
The following graph illustrates a representative consumer’s preferences for
marshmallows and chocolate chip cookies:
Refer to Figure 21-20. Assume that the consumer has an income of $80. If the price of
chocolate chips is $4 and the price of marshmallows is $4, the optimizing consumer
would choose to purchase
a.9 marshmallows and 6 chocolate chips.
b.10 marshmallows and 10 chocolate chips.