In a room an electric bulb of 40 watts is switched on for 5 hours per day. Calculate the cost of electricity consumed at the rate of ₹5 per unit for 30 days
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40 watts * 5 hours * 30 days
= 40 * 5 *30/1000 (.: 1000w=1kw)
.: cost = 6 * 5 = 30 rupees
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And studied for tommorow?? Im sure you will be from karnataka
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