Calculate the amount of electrical energy consumption for a month of 30 days in household of 220 V line with the following appliances being used: (a) five 60 W bulb for six hours. (b) two 1000W heater for 2 hours. (c) 750 w electric iron for 2 hours.(d) 100W refrigerator for 24 hours. (e) 1100W microwave oven for 3hours. The cost of first 200 units is Rs 2.40 and next 200 units is rupees 3.90 per unit respectively .