The interior lighting of the refrigerators is provided by incandescent lamps whose switches are actuated by the opening of the refrigerator door. Consider a refrigerator whose 30-W lightbulb remains on continuously as a result of a malfunction of the switch. If the refrigerator has a COP of 1.4 and the cost of electricity is Rp 1200/kWh, determine the increase in the energy consumption of the refrigerator and its cost per month (1 month = 30 days) if the switch is not fixed. Assuming the refrigerator is opened 50 times a day for an average of 30 s. COP= QL/(QH-QL) COP= Qin/Win Please help me for this. thanks a lot!