標題: If a fall in the price of good A increases the quantity demanded of good B, [打印本頁] 作者: ycknews 時間: 2020-3-19 11:23 標題: If a fall in the price of good A increases the quantity demanded of good B, If a fall in the price of good A increases the quantity demanded of good B,
A and B are complements
B is a substitute for A, but A is a complement to B
A and B are substitutes
A is a substitute for B, but B is a complement to A