4-22. Assume monetary benefits of an information system of $40,000 the first year and increasing benefits of $10,000 a year for the next five years (year 1 = $50,000, year 2 = $60,000, year 3 = $70,000, year 4 = $80,000, year 5 = $90,000). One-time development costs were $80,000 and recurring costs were $45,000 over the duration of the systems life. The discount rate for the company was 11 percent. Using a six-year time horizon, calculate the net present value of these costs and benefits. Also, calculate the overall return on investment and then present a break-even analysis. At what point does break-even occur?

4-23. Change the discount rate for Problem and Exercise 4-22 to 12 percent and redo the analysis.

4-24. Change the recurring costs in Problem and Exercise 4-22 to $40,000 and redo the analysis.