Jim Whitney Economics 250

Achieving input efficiency

Consider point a, the initial distribution of (LT and KT).
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1. Use the following information to compute the MRTS for firms i and j: 
  Firm i Firm j
MPL 160 16
MPK 10 8
MRTS    
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2. Which firm has the greater productivity of labor compared to capital?

 

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3. What direction of trade will make both firms i and j better off?

 

4. Diagram isoquants which reflect the situation faced by these two firms at point a. Label them Qai and Qaj.
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5. Now suppose that the two firms exchange 1L for 8K. Complete the following table:
   Firm i Firm j
Amount of input
gained (+) or lost (-)
Amount of output
gained or lost
Amount of input
gained (+) or lost (-)
Amount of output
gained or lost
DL:        
DK:        
Net DQ  ---   ---  
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6. Indicate in your diagram the direction the firms move from point a.
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7. a. Diagram the highest attainable output for firm i if firm j produces Qaj. Label your new isoquant Qbi. Which output is higher, Qai or Qbi? ______
b. Diagram the highest attainable output for firm j if firm i produces Qai.  Label your new isoquant Qbj. Which output is higher, Qaj or Qbj? ______
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8. Draw a contract curve (CC) which includes the two production points you illustrated in part 8.
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9. The portion of a contract curve which can be reached via voluntary exchange from a given initial endowment is known as the "core" of the contract curve. Indicate the core determined by point a.
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