Microeconomics
Microeconomics
5th Edition
ISBN: 9781319098780
Author: Paul Krugman, Robin Wells
Publisher: Worth Publishers
Question
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Chapter 7, Problem aWYWL
To determine

The effects of tax on demand and supply

Concept Introduction:

Tax:

Tax is a compulsory levy on the citizens by the government.

Demand:

Demand is a quantity of a commodity that a consumer is willing to purchase at a particular price in a given period of time.

Supply:

Supply is the quantity of a commodity that a producer is willing to sell at a particular price in a given period of time.

Purchasing Power:

It is the amount of goods and services a particular amount of money can purchase. It is basically the purchasing power of money.

Expert Solution & Answer
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Explanation of Solution

Let us take the example of a motor bike. Suppose, the cost of the motor bike is $100 and the government imposes 10% tax on the sale of it. Now, for the consumer earlier it was costing $100 but now it is costing $110, thus it has become relatively expensive. In other words, the real income of the consumer has reduced. With the reduction in the real income and substitution effect, the consumer will demand less quantity, that is, the consumer will move along the demand curve towards higher price and lesser quantity. Being conscious of this, the producer will also take an action. The supply curve will shift leftward implying less supply.

Thus, the taxes reduce both demand and supply.

As we can observe in the figure, where on vertical axis we have prices and on horizontal axis we have quantity, that before the imposition of tax, the equilibrium price and quantity were P and Q respectively

Microeconomics, Chapter 7, Problem aWYWL and after the tax it has reduced to P’Q’.

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