p. 5

13. (5) In class A there are 12 males and 18 females, class B has 6 males and 9 females, and class C has 18 males and 27 females. Which class(es) are different?

M F

A 12 18

B 6 9

C 18 27

14. (8) What is the net present value of a business which will cost you $8,000 now as a purchase and will operate for 20 years given: it makes taxable revenues of $25,000 per year, has tax deductible costs of $5,000 per year, and will use a tax deductible lease of $16,000 per year with payments at the beginning of year? The before tax interest cost is 8 percent and the firm pays a tax rate of 25 percent.