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Val's whole-house central air conditioner uses 3,000 watts when running. Val runs the AC 4 hours per summer day. Electricity costs (15 cents)/(1 kilowatt-hour). How much does Val's AC cost to run for a summer month of 30 days?

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Answer:

Explanation:

3000 W = 3 kW

3 kW(4hr/day)(30 day/month) = 360 kWh/month

360 kWh/month($0.15 / kWh) = $54

So about $75 when you add all the taxes and other fees that get added to a typical electric bill.

User Soheil Alizadeh
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