in a factory an electric bulb of 500 watts is used for 2 hours and electric motor of 0.5 HP is used for 5 hours everyday. calculate the cost of using these for 30 days if cost per unit is 3 rupees
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Energy=power*time=0.8(kw)*6(hr)=4.8kwh
Energy used in a day=4.8kwh=4.8 unit
Energy used in 30 days= 144 unit
Total cost=144*3=432 rs
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