company A:1/5

company B:4/25
company C:2/5
company D:3/20

how much more than company A's fraction of the market did company C have?

I did two of these problems for you. Now it's your turn. I'll be glad to check your answers.

-1/5

To find out how much more than company A's fraction of the market company C had, we need to calculate the difference between the fractions.

The fraction for company A is 1/5.

The fraction for company C is 2/5.

To find the difference, subtract the fraction for company A from the fraction for company C:

2/5 - 1/5 = 1/5.

Therefore, company C had 1/5 more of the market compared to company A.