試題詳解

2.A 1 percent increase in the price of good X results in a 2 percent increase in the quantity demanded of good Y. A 1 percent increase in the price of good Y will result in an increase in the quantity demanded of good Y that is:
(A) 0.5 percent
(B) 2 percent
(C) Less than 0.5 percent
(D) I percent
(E) Indeterminate from the information given