If there are five firms in an industry and the market shares of the firms are 45 percent, 22 percent, 17 percent, 10 percent and 6 percent. The four-firm concentration ratio for this industry is percent and the Herfindahl Index is .

94% and 2934

Explanation:

The computation of the four-firm concentration ratio for this industry is

= (Total four firms market shares in an industry ) ÷ (Total firm market shares in an industry)

= (45% + 22% + 17% + 10%) ÷ (45% + 22% + 17% + 10% + 6%)

= 94% ÷ 100%

= 94%

Now the Herfindahl Index is the sum of square of all firm market share

= 45^2 + 22^2 + 17^2 + 10^2 + 6^2

= 2934

if you use only 25 for your entertainment and only 200 for the groceries that you really need and take out the 50 per month for the computer then that should be enough

odd consecutive integers are odd integers that follow each other. they have a difference of 2 between every two numbers. if n is an odd integer, then n, n+2, n+4 and n+6 will be odd consecutive integers. the first number in the pattern is always the variable on its own or in this case, "n". examples.