All are correct because negative numbers are always smaller than 0 and bigger negative numbers always are less then smaller negative numbers such as -9 is smaller than -5
Answer:
11/12
Step-by-step explanation:
121 /132
Divide the top and bottom by 11
121/11 =11
132/11 =12
121/132 =11/12
The top 4 firms have (23 +22 +18 +12)% = 75% of the market.
The 4-firm concentration ratio is 0.75 or 75%.
