as a facilities manager, you are trying to reduce electricity costs. Currently, 375 100-watt incandescent light bulbs are used an average of 8 hours a day, 5 days a week. Your research indicates that a 26-watt fluorescent light bulb give the same amount of light as a 100-watt incandescent bulb. electricity cost $0.073 per kilowatt-hour. how much money will the company save in a 5-day workweek by using fluorescent bulbs instead of incandescent bulbs: (1,000 watts = 1 kilowatt

375 100 watt are used at 40 hours per week (8*5) cost is 375*100= 37500 watts per hour/ 1000= 37.5 kilo/hour for all lights then we multiply by 40 and get 1500 kiloswatts then multiply by cost 0.073 = 109.5$

375 26 watt are used at 40 hours per week cost is 375*26 = 9750 watts per hour /1000 =9.75 kilo/hour for all lights then multiply by 40 =390 * the cost 0.073 = 28.47$ per week

next we subtract 109.5-28.47 and get 81.03$ you are saving per week

0.073/killowatt

May 27th, 2015

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