An electric bulb of 60W burns for 5 hours a day the cost of electricity involved in a month of 30 days at Rs 3.00 per unit is (in ₹)
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2.An electric bulb of 60 W burns for 5 hours a day . The cost of ... Answer. Cost Of elctricity per unit= 3.50 Rs. Hence, total unit used is 18. Therefore, the amount to pay in 30 days is 63 Rupees.
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