If the plane has empty seats, the cost of adding one more pa enger is minuscule, although the average cost of flying a pa enger is ＄500, the marginal cost is merely the cost of the bag of peanuts and can of soda that the extra pa enger will co ume.
If the plane has empty seats, the cost of adding one more pa enger is minuscule, although the average cost of flying a pa enger is ＄500, the marginal cost is merely the cost of the bag of peanuts and can of soda that the extra pa enger will co ume.
如果飞机有空的座位,每增加一个乘客成本就会更小,尽管每位飞行乘客的平均成本是500美元,边缘的价格仅仅是乘客将额外消费的花生和罐装汽水的价格.