How much does it cost to power a refrigerator for 30 days if it is rated at 200 Watts and the power company charges $0.07 per kWh?

Question

How much does it cost to power a refrigerator for 30 days if it is rated at 200 Watts and the power company charges $0.07 per kWh?

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Thiên Di 2 months 2021-07-15T17:22:11+00:00 1 Answers 0 views 0

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    2021-07-15T17:23:22+00:00

    Answer:

    $10.08

    Explanation:

    There are 24 hours in a day.

    Now, if we assume that the refrigerator uses the 200 Watts per hour, thus, in one day, it will consume;

    200 x 24 = 4800 watts

    Thus, in 30 days, it will consume;

    4800 x 30 = 144,000 Watts

    Now, 1000 watts = 1KW

    Thus,144,000 watts = 144,000/1000 = 144 KW

    Now, since the power company charges $0.07 per kWh, thus the cost for 144 KW = 144 x 0.07 = $10.08

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