Complementary and substitute goods, the relationship between complementary and substitute goods

For complementary commodities such as automobiles and gasoline, the P of one moves in the opposite direction with the q of the other.

If two commodities complement each other, one commodity ****, it will reduce its demand, and at the same time, lead to a decrease in the demand for its complementary commodities; Conversely, the demand for a commodity decreases, and at the same time, the demand for its complementary goods increases.

A commodity complementarity commodity ** rises by 10%, then the demand for commodity A will decrease20, substitute goods: two goods can replace each other to satisfy the same desire.

For example, in beef and mutton, the P of one moves in the same direction as the Q of the other.

If the substitute commodity ** of commodity A decreases by 10%, the demand for commodity A will decrease by 30 accordingly, so when the two situations occur at the same time, the demand = (-20) + (30) = -50, that is, a decrease of 50, so choose B

Barracuda International Finishing:

1. Definition: Complementary commodities refer to products that are interdependent and provide utility. Substitute goods are products that provide the same utility to consumers.

The ** of a commodity moves in the opposite direction to the demand for its complementary goods. Substitute goods: The ** of a commodity moves in the same direction as the demand for its substitutes.

Third, the relationship is complementary to the commodity, that is, if you buy the first commodity, you must buy the second commodity, for example, if you buy a camera, you must buy film; If you buy a printer, you must buy ink cartridges, that is to say, the functions of different commodities are the same or similar, and they must be combined together to meet the same needs of consumers.

1. Complementary products are necessary to buy A.

Buy B, for example, when you don't have a digital camera, if you buy a camera, you have to buy film; Cameras and film are called complementary products, as is the case with printers and ink cartridges. A and B are inseparable.

2. The substitute is that if you buy A, you absolutely no longer need B. For example, Coca-Cola and Pepsi. A and B do not share the same day.

3. If the functions of the two commodities are the same or similar and can meet the same needs of consumers, the two commodities will be substitutes (beef and pork).

4. If two commodities must be combined to meet a certain need of people, these two commodities are complementary products (badminton and badminton racket).

5. What can be substituted for each other is a substitute, and what cannot be replaced and has mutual demand is a complementary product. For example, Coke and Sprite are substitutes, an increase in one causes a decrease in the other, while cars and gasoline are complements, and a change in one causes a change in the same direction in the other.

In economics, complementary products refer to products that can complement each other in terms of use value, such as computers and computer keyboards, mice and mouse pads, etc., which are complementary products. Substitutes refer to products that can be substituted for each other in terms of use value, for example, apples and bananas are substitutes at the fruit level, and if there are no apples to eat, you can eat bananas. Well, for example, bowls and chopsticks, when you buy a bowl, you generally have to buy chopsticks (or spoons or knives and forks) by the way, so that the function of eating can be fulfilled, and here, bowls and chopsticks are complementary.

Laptops and desktop computers are alternatives, if you want to play on the computer but don't want to use a desktop computer, you can use a laptop instead, so that you can also play games online.

Substitute.

That is, the two commodities have similar functions and have a substitution effect. The ** of substitutes increases, and the demand for the product increases. Vice versa.

For example, laundry detergent and laundry detergent are substitutes for each other. The increase in laundry detergent has led to a decrease in the demand for laundry detergent, after all, the price increase will affect sales. And clothes always have to be washed, and laundry detergent is a substitute for laundry detergent, so the natural demand increases.

A complement is a combination of two goods that must be combined in order to function. The ** of complementary products increases, and the demand for this commodity decreases. Vice versa.

For example, cosmetics and cleansing oils are complementary to each other. In the case of a single variable, the rise in cosmetics will lead to less use of cosmetics, and less use of cosmetics will naturally lead to less use of cleansing oils. In this way, the demand for cleansing oil will be reduced.

Substitution: The ** of a commodity moves in the same direction as the demand for its substitutes.

Complementary: The ** of a commodity moves in the opposite direction to the demand for its complementary.

Meaning of complementary, substitute.

First, differentiate between substitutes and complementary products based on demand cross-elasticity.

The cross-elasticity of demand for complementary products is negative, and when ** rises, the number of complementary products decreases;

The cross-elasticity of demand for substitutes is positive, and when ** rises, the number of its substitutes increases.

For example, pork and beef are called substitutes, pork ** is high, and the demand for beef increases; The opposite is true. Its cross-elasticity is negative.

Cars and gasoline are called complementary products, and the price of gasoline rises, and the demand decreases, resulting in a decrease in the demand for cars; The opposite is true. Its cross-elasticity is positive.

About the supply should be **.

1. Substitutes: Two kinds of goods can replace each other to satisfy the same desire of consumers because their functions are similar, that is, the P of one commodity changes in the same direction as the Q of the other. If the decline in the demand for commodity B is caused by the decline in the demand for commodity B, then commodity A and commodity B are competing goods or substituting each other.

2. Complements: Two commodities together satisfy a desire. Complementary commodities are two or more related commodities that jointly satisfy the same desire of consumers, and if the consumer's hobbies, monetary income, and other commodities remain unchanged, if the ** of commodity A causes an increase in the demand for commodity B, then commodities A and B are complementary commodities.

3. Complementary goods, in layman's terms, mean that if two commodities must be combined together to meet a certain need of people, then these two things are complementary commodities. Since the ** of a commodity moves in the opposite direction to the demand for its complementary goods, its cross-elasticity is negative. Complementary commodities belong to the type of related commodities (the other is the alternate commodity calendar), which is often used to analyze the reasons for the change in the demand for a certain commodity in the market.

1.Alternative goods: trains and planes, beef and lamb, bread and steamed buns, milk and milk powder, soft drinks and tea, apples and pears, etc.

2.Complementary products: table tennis balls and table tennis rackets, cars and petrol, cameras and films, bicycles and self-contained driving tires, paintbrushes and brushes, pencils and erasers, toothbrushes and toothpaste, etc.

3.Substitute goods refer to two goods that can be substituted for each other because of their similar functions, satisfying the same desire of the consumer.

4.A complementary commodity is one in which two goods work together to satisfy a desire.