In a household,an electric bulb of 100W is used for 10 hours and an electric heater of 1000W is used for 2 hours .Calculate the cost of bulb and the heater for 30 days the cost of one unit of electrical energy as 2 rupees.

 In a household,an electric bulb of 100W is used for 10 hours and an electric heater of 1000W is used for 2 hours .Calculate the cost of bulb and the heater for 30 days the cost of one unit of electrical energy as 2 rupees.

Answer- 180 Rupees.

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