It is estimated that a certain piece of equipment can save $22,000 per year in labor and materials costs. The equipment has an expected life of five years and no market value. If the company must earn a 15% annual return on such investments, how much could be justified now for the purchase of this piece of equipment? Draw a cash-flow diagram from the company's viewpoint. A 45-year-old person wants to accumulate $750,000 by age 70. How much will she need to save each month, starting one month from now, if the interest rate is 0.5% per month? The cost to equip a large cruise ship with security cameras is $500,000. If the interest rate is 15% per year and the cameras have a life of six years, what is the equivalent annual cost (A) of the security cameras? You have just inherited $100,000 as a lump-sum amount from your distant aunt. After depositing the money in a practically risk-free certificate of deposit (CD) earning 5% per year, you plan to withdraw $10,000 per year for your living expenses. How many years will your $100,000 last in view of these withdrawals