Can anyone help me find a case study on economics

Opportunity cost refers to the choice of one investment or use of resources at the same time as the selection of other possible investments or benefits from the use of resources. Thus, opportunity cost refers to the choice of an investment or use of a resource, giving up other possible investments or benefits from the use of resources.

From the perspective of opportunity cost, whether Boss Zhang's statement that he made a profit of 1.2 million yuan last year is reasonable, and it is necessary to consider other possible investments or benefits from the use of resources that he gave up while choosing to manage the clothing store himself.

Judging from Boss Zhang's situation, he has two options: one is to invest the same resources he has in Boss Zhao's store and get an income of 1.5 million yuan; The second is to invest the same resources in Boss Wang's store, and obtain an income of 1.8 million yuan. If Boss Zhang chooses one of these two options, then he will give up the income of personally managing the clothing store.

Based on the above analysis, we can conclude that from the perspective of opportunity cost, Boss Zhang's statement that he made a profit of 1.2 million yuan last year is reasonable. Because Boss Zhang chose to personally manage the clothing store, he gave up other possible investments or the benefits of using resources, and the income (accounting profit) obtained by personally managing the clothing store exceeded the other possible investments or benefits from the use of resources that he gave up.

Therefore, from the perspective of opportunity cost, Boss Zhang's statement that he made a profit of 1.2 million yuan last year is reasonable.

1. Public goods are non-competitive in use and non-exclusive in terms of benefits, which means that someone's use of public goods will not affect the use of others, and it will not affect the size of other people's benefits.

Museums are generally considered public goods, but there are also private museums that collect cultural relics and exhibit them for a fee.

The user of public goods does not have to be **, because there are times when the cost of public goods cannot be afforded, so private companies have to bear it, such as the early toll highways, lighthouses in the Mediterranean, tap water supply in Western countries, etc.

Access to public goods is not always free for these reasons.

2. Market failure: for non-public goods, due to market monopoly and distortion, or for public goods, due to information asymmetry and externality, etc., the allocation of resources is ineffective or inefficient, so that the resource allocation state of zero opportunity cost of resource allocation cannot be realized.

There may be many reasons for the failure of the public goods market, but it boils down to the creation of monopoly, which causes the imbalance in the structure of supply and demand, and leads to the distortion of the market.

3. An effective means to solve market failure in the field of public goods is to introduce a competition mechanism.

It is recommended that you find a way to find some relevant economics school forums, where economics students are good at solving this kind of problem, and it is more convenient for the professional counterpart, and the information you need is easy to find.