Suppose the demand for a product is given by P = 40 %u2013 4Q. Also, the supply

ID: 1178112 • Letter: S

Question

Suppose the demand for a product is given by P = 40 %u2013 4Q. Also, the supply is given by P = 10 + Q.

A) (2 points) What is the equilibrium price and quantity of the product?

B) (2 points) What is the price elasticity of demand at the equilibrium price?

For the next 3 questions, assume that there is a $10 per unit excise tax levied on the consumers of the product.

C) (2 points) What price will buyers pay after the tax is imposed?

D) (2 points) What is the deadweight loss created by the tax?

E) (2 points) What is the quantity of the good that will be sold after the tax is imposed?

... First we find where demand equal supply...

9000-6p = -3000+9p

Solving P = 800

So... Q = 4200

Now lets add the tax in...

The excise is "generally" paid by the buyer. Since the problem doesn't specify this, we'll need to assume it.

The new equation for the excise tax equals...

Demand: Q = 9000 - 6(P+90) = 9000 - 6p - 540 = 8460 - 6p

Supply: Q = -3000 +9(P)

Solving for P...

-3000 + 9p = 8460 - 6p

Psupply = 764

Pdemand = 854

Q = 3,876

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