72 2 A firm produces three products which sell, respectively, for $25, $35, and $50. Labor
requirements for each product are, respectively, 3.0, 4.0, and 3.5 hours per unit. Assume
labor costs are $5 per hour and annual fixed costs are $75,000.
(a) Construct a joint total revenue function for the sales of the three products.
() Determine an annual total cost function for production of the three products.
(c) Determine the profit function for the three products. Is there anything unusual
about this function?
(d) What is annual profit if 20,000, 10,000, and 30,000 units are sold, respectively, of the
three products?

If the ceo of a large, diversified, firm were filling out a fitness report on a division manager (i.e., "grading" the manager), which of the following situations would be likely to cause the manager to receive a better grade? in all cases, assume that other things are held constant.a. the division's basic earning power ratio is above the average of other firms in its industry.b. the division's total assets turnover ratio is below the average for other firms in its industry.c. the division's debt ratio is above the average for other firms in the industry.d. the division's inventory turnover is 6, whereas the average for its competitors is 8.e. the division's dso (days' sales outstanding) is 40, whereas the average for its competitors is 30.