A Herfindahl-Hirschman Index is calculated by A. summing the advertising expenditures of the firms that want to merge by total industry advertising expenditures.
B. summing the amount of sales by the four largest firms and dividing by total industry sales.
C. dividing the number of firms wanting to merge by the total number in the industry.
D. summing the squares of the market shares of each firm in the industry.

Faldo corp sells on terms that allow customers 45 days to pay for merchandise. its sales last year were $325,000, and its year-end receivables were $60,000. if its dso is less than the 45-day credit period, then customers are paying on time. otherwise, they are paying late. by how much are customers paying early or late? base your answer on this equation: dso - credit period = days early or late, and use a 365-day year when calculating the dso. a positive answer indicates late payments, while a negative answer indicates early payments. a. 21.27b. 22.38c. 23.50d. 24.68e. 25.91b