Question

If there is a market with the below noted market segmentation, what would the four firm market concentration ratio be?

Distribution of sales: 30%, 3%,10%, 5%,15%, 2%, 35%

a. 10
b. 90
c. 50
d. 40

Answer 1

b. 90

Step-by-step explanation:

The concentration ratio is a term in business that is measured as the total summation of the market share percentage carried by the largest specified number of companies in an industry. The concentration ratio varies between 0% to 100%, and an industry's concentration ratio is considered to demonstrates the extent of competition in the industry.

However, the four-firm concentration ratio is calculated by summing the market shares—that is, the percentage of total sales—of the four largest companies in the given market.

Hence, in this case, we have 35%, 30%, 15% and 10% as the top four largest market share. There by, summation equals => 35+30+15+10 = 90.

Answer 2

The correct answer is:

90 (b.)

Step-by-step explanation:

A concentration ratio is the ratio of the combined market shares percentage held by the largest specified number of firms, compared to the given market size. The concentration ratio ranges from 0% to 100%. If the concentration ratio of an industry ranges from 0% to 50%, that industry is said to be perfectly competitive if the top 5 firms have a concentration ratio of 60% or more, oligopoly is said to occur, and if the competition ratio of one company is 100% it shows monopoly.

In our example, the concentration of the largest four market segments are:

35%, 30%, 15% and 10%

Therefore, the four firm market concentration ratio = 35 + 30 + 15 + 10 = 90