You can purchase an optical scanner today for $450. The scanner provides benefits worth $66 a year. The expected life of the scanner is 10 years. Scanners are expected to decrease in price by 20% per year. Suppose the discount rate is 10%.

Should you purchase the scanner today?

• Yes

• No

When is the best purchase time?

• Wait for 4 years

• Wait for 5 years

• Wait for 6 years