Q:a house wife uses a 100W blub for 8hours a day and electric heater of 300w for 4 hours a day the total cost for the month. of June at the rate of 0.05 rupees per unit will be.?
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100W X 8 h=800Wh
300W×4h=1200Wh
800Wh +1200Wh=2000Wh
2000÷1000=2KWh
2×0.05=0.10/-
300W×4h=1200Wh
800Wh +1200Wh=2000Wh
2000÷1000=2KWh
2×0.05=0.10/-
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