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4. A household uses the following electric appliances:() Refrigerator of rating 400 W for ten hours each day(ii) Two electric fans of rating 80 W each for twelvehours each day. (iii) Six electric tubes of rating 18 Weach for 6 hours each day. Calculate the electricity billof the household for the month of June if the cost perunit of electric energy is 5.00.​

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