It takes 12 minutes to boil 1 litre of water in an electric kettle. Due to some defect it becomes necessary to remove 20% turns of heating coil of the kettle. After repair, how much time will it take to boil 1 litre of water? 18.2 minute 9.6 minute 16.8 minute 14.4 minute
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14.4 minutes will be taken
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