# Deriving Marginal Utility From Consumption of Goods. In other words, divide the difference in total utility by the difference in units to find marginal utility. To learn more from our Entrepreneur co-author, like how to use a marginal utility chart, keep reading the article! This article was co-authored by Michael R. Michael R. Lewis is a retired corporate executive, entrepreneur, and investment advisor in Texas. Categories: Managing Your Money. Lewis Updated: May 16, There are 15 references cited in this article, which can be found at the bottom of the page.

Understand the economic concept of utility. Utility is the "value" or "satisfaction" that a consumer gets from consuming a certain number of goods.

### Teacher Resources

A good way of thinking of it is that utility is how much money a consumer would hypothetically pay for the satisfaction provided by a good. Find the total utility from consuming a certain number of goods. Total utility is just the concept of utility applied to more than one good. If consuming one good gives you a certain amount of utility, consuming more than one of the same good will give you an amount that is higher, lower, or the same. However, after eating the first fish, you're not quite as hungry as before. It's not worth as much to you now that you're somewhat full. Note that it doesn't matter whether or not you actually buy the second fish.

MU is only concerned with what you would pay for it. In real life, economists use complex mathematical models to predict what consumers hypothetically would pay for something. Find the total utility from consuming a different number of goods. To find MU, you need two different total utility measurements. You'll use the difference between them to make your MU calculation. The satisfaction you would get from it is almost cancelled out by the feeling of being uncomfortably full.

Calculate MU. Divide the difference in total utility over the difference in units.

## Demand and Marginal Utility (With Diagram) | Indifference Curve

The answer you get will be the marginal utility, or the utility given by each additional unit consumed. Use the equation to find the MU for each additional unit. In the example above, we found the average MU for several goods being consumed. This is one valid way to use MU. However, it's actually more often applied to individual units of goods consumed.

## Law Of Diminishing Marginal Utility

This gives us the precise MU for each additional good not an average value. Just use the normal equation to find the MU when the change in quantity of goods consumed is one.

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In the example situation, you already know the MUs for each individual unit. Use the equation to maximize your utility. In economic theory, consumers make decisions about how to spend their money in an effort to maximize their utility. In other words, consumers want to get as much satisfaction as possible for their money. This means that consumers will tend to buy products or goods until the marginal utility of buying one more good is smaller than the marginal cost the price of one more unit.

Determine lost utility. Let's look at the example situation one more time. Basically, you're losing utility on this transaction, so it's not in your favor. This means that an orange has a higher marginal utility per dollar spent. Therefore an additional budget dollar should be spent on the orange.

### The Economy

As more budget dollars are spent on the oranges you would expect the marginal utility of the orange to drop, and continue dropping until the marginal utility of the orange decreases from 3 to 2. If the marginal utility of an orange changes to two, then the marginal utility per dollar spent of an orange would become two. At this point the marginal utility per dollar spent on both apples and oranges would be equal to two and it means that we are using our budget efficiently by maximizing our utility given our budget.

Whichever good has a higher marginal utility per dollar spent, is the good that we should consume more of that good until the marginal utility decreases to the point at which they're both equal.

Tags budget marginal utility utility. Posted by Jeff.

Labels: budget , marginal utility , utility. Alamgir Hossain 11 July. Zimmerman 29 August. Kim 12 March. Unknown 12 April. Newer Post Older Post Home. Subscribe to: Post Comments Atom. Ask a question search this site. Common Topics algebra 34 economics 50 glossary 25 macroeconomics 57 microeconomics supply and demand Popular Posts.

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The effect of taxes on supply and demand. One form of government intervention is the introduction of taxes. Taxes are typically introduced to increase government revenue, but they al The five fundamental principles of economics, basic terms we need to know in order to move on. There are five fundamental pri Marginal utility will always be positive when we are dealing with goods as opposed to bads or neutrals. A negative divided by a negative is positive, so the marginal utility of a good will always be a positive value.

Note that in both cases, we can do a little algebra to find the total change in utility resulting from a marginal change in one good while the amount of the other good is held constant. Above, we saw that. If we multiply both sides by , then we have. Therefore, the change in utility resulting from a tiny change in good 1 and no change in good 2 is just the product of that tiny change in good 1 and the marginal utility with respect to good 1.

But what does indifference mean? It means that utility for both bundles is exactly equal. In the MRS section, we learned why the left hand side would automatically be negative. The right hand side needs the negative sign because marginal utility is positive for goods, so the ratio of marginal utilities is always positive. When using calculus, the marginal utility of good 1 is defined by the partial derivative of the utility function with respect to.

That is, We want to consider a tiny change in our consumption bundle, and we represent this change as We want the change to be such that our utility does not change e. Instead of using derivatives, we could use implicit functions. We can again rearrange terms and the result is the same as what we found before:. Deriving Marginal Utility From Consumption of Goods. Deriving Marginal Utility From Consumption of Goods. Deriving Marginal Utility From Consumption of Goods. Deriving Marginal Utility From Consumption of Goods. Deriving Marginal Utility From Consumption of Goods. Deriving Marginal Utility From Consumption of Goods.

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