Answer to Question #158708 in Macroeconomics for Iqra

Question #158708

You have been hired by Kia as manager for its Pakistan operations. Assume following is the short￾run production function at their assembly plant outside Karachi:

Q = 10L2 – 0.5 L3

 where L is variable input labor, Q is output of Cars assembled


b. Demonstrate the relationship between Total Production, Marginal Product and 

AverageProduct in a hypothetical graph and clearly label the three stages as per the 

values of Lyou observed in 


1
Expert's answer
2021-01-29T11:16:02-0500

Part A

QQ == 10L10L2^2 0.5L3-0.5L^3

Average Product, AP=AP= Q/LQ/L

10L20.5L3/L10L^2-0.5L^3/L

10L0.5L210L-0.5L^2

At maximization we equate to zero & differentiate with respect to L.

d(AP)/dL=0d(AP)/dL=0

101.52L=010-1.5*2L=0

L=10L=10

Stage 1 is as a result of average product increase. The range is from L=0 to L=10

Marginal product,

MP=dQ/dLMP=dQ/dL

MP=102L0.53L2MP=10*2L-0.5*3L^2

MP=20L1.5L2MP=20L-1.5L^2

At Stage 2 margin product decreases but still remains positive.

At Stage 3 marginal product is equal to zero

MP=0MP=0

20L1.5L2=020L-1.5L^2=0

20=1.5L20=1.5L

L=20/1.5L=20/1.5

L=13.33L=13.33

Part B

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