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Most Indoor Fluorescent Light Fixtures Contain Two or Three 40-Watt

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Most indoor fluorescent light fixtures contain two or three 40-watt bulbs each.If a classroom has 15 fluorescent light fixtures, each with three 40-watt bulbs, how much does it cost to leave the lights on for a two-hour class? Assume the electric company charges approximately 10 cents per kilowatt-hour.


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