5-52. Just because a project’s payback period is relatively long doesn’t mean it is not profitable in the long run. Consider an investment in LED lights with a price tag of $239,000. The estimated annual savings in electricity and routine maintenance is $40,300 and the life of the LED lights is 20 years. (5.6, 5.7)

a. What is the simple payback period for the lights?

b. What is the IRR of this investment?

c. What do you conclude from Part

(a) and Part (b)?