Marginal utility approach, Managerial Economics

Marginal utility approach

The downward sloping nature of the demand curve can be explained by using the law of diminishing marginal utility.  For instance, consider a consumer who ahs to choose between two goods, X and Y, which have prices Px and Py respectively.  Assume that the individual is rational and so wishes to maximise total utility subject to the size of the income.

The consumer will be maximising total utility when his or her income has been allocated in such a way that utility to be derived from the consumption of one extra shillings worth of X is equal to the utility to be derived from the consumption of one extra shillings worth of Y.  In other words, when the marginal utility per shilling of X is equal to the marginal utility per shilling of Y.  Only when this is true will it not be possible to increase total utility by switching expenditure from one good to another.  This condition for consumer equilibrium can be written as follows:

                        Mux = Muy

                          Px     Py

Where MUx and MUy are the marginal utilities of X and Y respectively and Px and Py are the

prices (in shillings) of X and Y respectively.

Any number of commodities may then be added to the equation. The table below gives hypothetical marginal utility figures for a consumer who wishes to distribute expenditure of K£44 between three commodities X, Y and Z.

Marginal utilities derived from each Kg of:

Kg consumed

x (£8/kg)

Y (£4/kg)

Z (£2/kg)

1

2

3

4

5

6

7

 

72

48

40

36

32

20

12

60

44

32

24

20

8

4

64

56

40

28

16

12

8

In order to maximize utility, the consumer must distribute available income so that:

1886_marginal utility.png

From the table you can see that this yields, a selection where the consumer buys 2 kg of X, 4 kg of Y and 6 kg of Z.  Hence:

210_marginal utility1.png

If the consumer wishes to spend all the K£44, it is impossible to distribute it any other way which would yield greater total quality.  This theorem is called the concept of equi-marginal utilities.

Posted Date: 11/27/2012 5:15:27 AM | Location : United States







Related Discussions:- Marginal utility approach, Assignment Help, Ask Question on Marginal utility approach, Get Answer, Expert's Help, Marginal utility approach Discussions

Write discussion on Marginal utility approach
Your posts are moderated
Related Questions
Assumptions of Monopolistic Competition Monopolistic competition as the name implies, combines features from both perfect competition and monopoly.  It has the following featu

Explain how managerial economics is useful for decision making

Burden of the national debt The extent of the burden on a nation of public debt, depends in the first place on whether it is an external or an internal debt.  The burden of th

When is production profitable according to price-taking firm at profit, break-even or loss? Production profitable at profit, break-even or loss: a. When TR > TC, in that cas

Explain about the marginal analysis. The optimal quantity of an activity is the level which produces the maximum probable total net gain. The principle of marginal analysis

A firm faces a perfectly elastic demand for its output at a price of $6 per unit of output. The firm, Though, faces an upward-sloped labor supply curve of          E= 20w-120 W

In the national income analysis, investment refers to the value of than part of the aggregate output for any given time period which takes the form of construction of new structure

Exceptional supply curves In have some situations the slope of the supply curve may be reversed.   i)   Regressive Supply.   In this case, the higher the price within a ce

NORMAL AND SUPERNORMAL PROFITS Normal profit refers to the payment necessary to keep an entrepreneur in a particular line of production. In economics, it is generally belie

what are the Sources of public debt