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An electric bulb of 40 W glows for 10 hours a day. What is the amount to be paid in the month of 30 days if 1 unit of electricity cost Rs. 2.50?

Answer» An electric bulb of 40 W glows for 10 hours a day. What is the amount to be paid in the month of 30 days if 1 unit of electricity cost Rs. 2.50?


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