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23 February, 20:43

Consider a refrigerator that consumes 400 W of electric power when it is running. If the refrigerator runs only one-quarter of the time and the unit cost of electricity is $0.13/kWh, what is the electricity cost of this refrigerator per month (30 days)

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  1. 23 February, 20:53
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    Electricity cost = $9.36

    Explanation:

    Given:

    Electric power = 400 W = 0.4 KW

    Unit cost of electricity = $0.13/kWh

    Overall time = 1/4 (30 days) (24 hours) = 180 hours

    Find:

    Electricity cost

    Computation:

    Electricity cost = Electric power x Unit cost of electricity x Overall time

    Electricity cost = 0.4 x $0.13 x 180

    Electricity cost = $9.36

    Given:

    Electric power = 400 W = 0.4 KW

    Over all Time = 30 (1/4) = 7.5 days

    Unit cost of electricity = $0.13/kWh

    Find:

    Electricity cost.

    Computation:

    Electricity cost = Electric power x Unit cost of electricity x Over all Time

    Electricity cost = 0.4 x 0.13 x 7.5

    Electricity cost = $
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