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An 11.0-W energy-efficient fluorescent lightbulb is designed to produce the same illumination as a conventional 40.0-W incandescent lightbulb. Assuming a cost of $0.102/kWh for energy from the electric
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An 11.0-W energy-efficient fluorescent lightbulb is designed to produce the same illumination as a conventional 40.0-W incandescent lightbulb. Assuming a cost of $0.102/kWh for energy from the electric company, how much money does the user of the energy-efficient bulb save during 260 h of use? (Give your answer to the nearest cent.) $

User Colemars
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Answer:

40-11 = 29----- 29 *240h = 6960 w = 6.96 kw

0.113 * 6.96 = 0.78648 $

User Nzh
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