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In a certain city, electric
Question Description
In a certain city, electricity costs $0.18 per kW·h. What is the annual
cost for electricity to power a lamp-post for 7.50 hours per day with
(a) a 100.-watt incandescent light bulb (b) an energy efficient 25-watt
fluorescent bulb that produces the same amount of light? Assume 1 year =
365 days.
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