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Determine for how many days, hours, and minutes and seconds you can operate a 250w load so that the cost does not exceed R20.00 if

Determine for how many days, hours, and minutes and seconds you can operate a 250w load so that the cost does not exceed R20.00 if the cost of one kwh is R0.28

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1 kwh 028 Rs 1 1000 1 hr 028 Rs 250 xhr 20 Rs hr 20 ... blur-text-image

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