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How much would it cost to operate the appliances if the cost of electrical energy is 12 cents per kilowatt hr?

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a 5000 watt airconditioner for 30mins

a 70 watt blanket for 8hrs

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  1. Consumption * Energy rate = Operational Cost

    5000 watt * (1 kw/1000 watts) * (30 min * 1 hr/60 min) * 12 cents/kw- hr = 30 cents

    70 watts * (1 kw/1000 watts) * 8 hours * 12 cents/kw-hr = 6.72 cents = 7 cents (rounded off to the nearest cent)

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