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The silverware industry has been in serious decline since the 1980s. Family dining habits are less formal so people purchase less silverware. More recently, the price of silver jumped from $5 to $20 per ounce. Which graph in Figure 4-12 best illustrates these developments?

In the figure above, what is the MPC?

A) 0.75 B) 1.00 C) 0.50 D) 0.80 E) 0.90

In one hour John can produce 20 loaves of bread or 8 cakes. In one hour Phyllis can produce 30 loaves of bread or 15 cakes. Which of the following statements is true?

A) Phyllis has a comparative advantage in producing bread. B) John has a comparative advantage in producing cakes. C) Phyllis has an absolute advantage in both goods. D) John has an absolute advantage in both goods. E) Phyllis has a comparative advantage in producing both cakes and bread.