题目内容

Which of the following might lead to an increase in the equilibrium price of jelly and a decrease in the equilibrium quantity of jelly sold? ( )

A. an increase in the price of peanut better, a complement to jelly
B. an increase in the price of Marshmallow Fluff, a substitute for jelly
C. an increase in the price of grapes, an input into jelly
D. an increase in consumers’ incomes, as long as jelly is a normal good

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A. increase, decrease
B. decrease, increase
C. stay the same, increase
D. increase, stay the same

A. by less than $100
B. between $100 and $ 200
C. between $200 and $300
D. by more than $300

A. It falls by less than $100.
B. It falls by more than $100.
C. It rises by less than $100.
D. It rises by more than $100.

A. 1/5
B. 1/2
C. 2
D. 5