如果有A和B两个消费者,对于A消费者来说,以商品X替代商品Y的边际替代率为5;对于B

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问题:

如果有A和B两个消费者,对于A消费者来说,以商品X替代商品Y的边际替代率为5;对于B消费者来说,以商品X替代商品Y的边际替代率为3,假如A和B之间最终进行了交换,那么X和Y两种商品之间的交换比率可能为 ( )

A.一单位X和5单位Y相交换

B.一单位X和3单位Y相交换

C.X和Y之间的交换比率介于1/5和1/3之间

D.上述均不正确

考点:普通考研金融学硕士联考(2011年1月停考)金融学硕士联考35
题型:单项选择题
阅读理解。
                        Summer Sale!
      Save on every record and tape in the store.
      COUNTRY. POP. ROCK.JAZZ
      Special low prices on all records and tapes.
      LIST PRICE    SALE PRICE
           $6           $4.5
           $7           $5.5
           $8           $6.5
      Sale starts June 22 and ends June 31.
      No mail or telephone orders during the sale.
      Add: 30 Green Street
      Open:  Sunday-Saturday, 9:30 a. m. to 6:30 p.m.
                                THE MUSIC STORE
1. The Music Store _____.
A. will close on June 22
B. has sale price only in summer
C. will close after summer
D. is having a summer sale
2. What records and tapes in the store are not on sale?  
A. Disco.              
B. Rock.
C. Jazz and country.    
D. Pop.
3. If you buy a tape that list price is $ 8 during the sale, how much money can you save?
A 1.5  
B 2.5  
C 3.5  
D 4.5
4. The last day of the sale is _____.
A. June 22        
B. June 31
C. Sunday        
D. Saturday
5.Which one is NOT right according to the ad?  
A. The sale will last from June 22 to June 31.
B. You can't buy things over the phone.
C. Special low prices are just for special men.
D. You can buy records and tapes at 6:00 p.m.
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