Calculate the electricity bill amount for a month of April, if 4 bulbs of 40 W are used for 5h, 4 tube lights of 60 W are used for 5h, a TV
Calculate the electricity bill amount for a month of April, if 4 bulbs of 40 W are used for 5h, 4 tube lights of 60 W are used for 5h, a TV
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