chrissafi14 chrissafi14

15-09-2017
Mathematics

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A 120 watt light bulb uses about 0.1 kilowatt of electricity per hour. if electricity costs 0.20$ per kilowatt hour, how much does it cost to have the bulb on for an hour?

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Аноним Аноним

15-09-2017

It will cost .20 * .1 = .02 cent an hour

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