The opportunity cost of a purchase is:
a. the selling price of the good or service.
b. zero if the good or service satisfies a need.
c. greater for persons who are rich.
d. the good or service given up for the good or service purchased.
d
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The marginal expenditure of a monopsonist is $4. The wage it currently pays is $3. The labor supply curve has a constant elasticity. What is the elasticity of the labor supply?
A) 0.33 B) 0.66 C) 1 D) 3
Ingrid has been waiting for the show "Mamma Mia!" to come to town. When it finally does come, tickets cost $60. Ingrid's reservation price is $75. But when Ingrid tries to buy a ticket, they are sold out. Suppose Steven was able to purchase a ticket at the box office for $60. Steven's reservation price for the ticket is $65. If Steven attends "Mamma Mia!" and Ingrid does not, then this situation is:
A. efficient because Steven arrived at the ticket counter before the show was sold out. B. inefficient because Ingrid would have enjoyed the show too. C. inefficient because Steven and Ingrid could have made a mutually beneficial trade. D. efficient because Steven paid less for the ticket than his reservation price.