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[" There are "5" tube-lights each of "40...

[" There are "5" tube-lights each of "40W" in a house.These are used on an average for "],[5" hours per day.In addition,there is an immersion heater of "1500W" used on an "],[" average for "1" hour per day.The number of units of electricity are consumed ina "],[" month is "],[[" a) "25" units "," b) "50" units "," c) "75" units "," d) "100" units "]]

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