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How do you calculate the Monthly cost of using a 700 watt refrigerator that runs for 10 hours a day at a cost of 0.09 Killowatts per hour?
Wiki User
∙ 13y ago
(700 watts) x (10 hours/day) x (30 days/month) x (1 kilowatt / 1,000 watts) =
(700 x 10 x 30 / 1,000) (watt - hour - day - kilowatt / day - month - watt) =
210 kilowatt-hour / month
We're guessing that the actual cost of your electric energy is $0.09 per kilowatt-hour.
(210 kilowatt-hour / month) x ($0.09 / kilowatt-hour) = $18.90 per month .
Wiki User
∙ 13y ago
To calculate the monthly cost, first convert the daily usage into monthly usage: 700 watts * 10 hours * 30 days = 210,000 watt-hours or 210 kWh. Then, calculate the monthly cost: 210 kWh * $0.09/kWh = $18.90. So, the monthly cost of using the refrigerator would be $18.90.
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