a television 65w, a refrigerator 1.2kw, an electric 650w and 10 lamps 40w each are...
a television 65w, a refrigerator 1.2kw, an electric 650w and 10 lamps 40w each are...
a television 65w, a refrigerator 1.2kw, an electric 650w and 10 lamps 40w each are all connected in series in a house. how much will it cost a housekeeper to switch on all the appliances for 24 hours if the cast of electricity is 15 kobo per kwh?
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