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Light emitting diode ( LED ) light bulbs have become required in recent years, but do they make financial sense? Suppose a typical 6 0
Light emitting diode LED light bulbs have become required in recent years, but do they make financial sense? Suppose a typical watt incandescent light bulb costs $ and lasts for hours. A watt LED, which provides the same light, costs $ and lasts for hours. A kilowatthour is watts for hour. Suppose you have a residence with a lot of incandescent bulbs that are used on average hours a year. The average bulb will be about halfway through its life, so it will have hours remaining and you cant tell which bulbs are older or newer If you require a return of percent, at what cost per kilowatthour does it make sense to replace your incandescent bulbs today? A negative answer should be indicated by a minus sign. Do not round intermcost ediate calculations and round your answer to decimal places, eg break even cost
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