Question

In: Economics

Please solve the following show the work: The generalized demand and supply functions for a certain...

Please solve the following show the work:

  1. The generalized demand and supply functions for a certain good are determined to be:

Qd = 800 – 2P – 0.01M + 16PR

Qs = 50 + 4P – 40PI + 51F

  1. Good X is a(n)_________good. Goods X and R are _____.

  1. Suppose income is initially $20,000, the price of good R is $10, the price of the input (PI) $25, the number of firms producing good X (F) is $20. Write the equations for demand and supply curves, where P is the only independent variable. Graph the demand and supply curves.

  1. Find the equilibrium price and quantity.

Solutions

Expert Solution

Qd = 800 – 2P – 0.01M + 16PR

Qs = 50 + 4P – 40PI + 51F

Here:

Quantity demand for good X is inversely related to the income(M) that is as income(M) increases demand for good X decreases. It implies good X is an inferior good.

Quantity demand for good X is positively related to the price of good R that is as the price of good R increases the demand for good X increases. So it implies that good X and good R are substitute goods.

a. Good X is a(n) inferior good. Goods X and R are Substitute goods.

a. Suppose income is initially $20,000, the price of good R is $10, the price of the input (PI) $25, the number of firms producing good X (F) is $20.

Qd = 800 – 2P – 0.01(20000) + 16(10)

Qd = 800-2P-200+160

Qd = 760-2P Demand curve

Q 0 760
P 380 0

Qs = 50 + 4P – 40(25)+ 51(20)

Qs = 50+4P-1000+1020

Qs = 70+4P Supply curve

Q 70 470 870
P 0 100 200

a. Equilibrium condition:

Qd = 760-2P

Qs = 70+4P

Demand = Supply

760-2P = 70+4P

760-70 = 4P+2P

690= 6P

P= 690/6= 115 Equilibrium price

Put P= 115 in supply curve:

Q= 70+4(115)= 70+460= 530 Equilibrium quantity


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