某消费者购买商品X和Y的边际效用
商品单位/件1 2 3 4 5 6 7 8
X的边际效用20 18 16 13 10 6 4 2
Y的边际效用50 45 40 35 30 25 20 15
试分析:
(1)该消费者如何购买X和Y才能达到均衡?
(2)达到均衡时该消费者得到的最大效用是多少
A.0型:45%(5/11)
B.I型:86%(6/7)
C.II型:100%(17/17)
D.0型:100%(17/17)
E.III型:100%(17/17)
提示:星期三晚上有一个音乐会,Betty有两张票,打电话给Rose,问她是否有空前往,并约她音乐会后去看望王大爷,Rose听了很高兴,两人相约在六点四十五分入口处见面。
Rose:Hello!This is Rose speaking.
Betty:Hello!Rose,this is Betty. (1) this Wednesday evening?
Rose:Yes,Why?
Betty:There&39;s a good concert,and I&39;ve got two tickets.I wonder (2) .
Rose:That&39;s great! (3) ?
Betty:7 o&39;clock.But how about (4) at 6:45?
Rose.OK.I think I can make it.
Betty;After the concert, (5) shall we?
Rose:That&39;s a good idea?Why don&39;t we take some food for him?
Betty:Why not? OK,see you Wednesday.
Rose:See you then.Bye!
_____________
_______________
________________
________________
_______________
请帮忙给出每个问题的正确答案和分析,谢谢!
A.41;4;28;9
B.43;5;31;7
C.45;6;32;7
D.47;7;34;6
A.13=1×13
B.27=3×3×3
C.60=2×5×6
D.42=1×3×14