An electrical company earns a profit of ` 80 on every colour T.V and a loss of ` 60 on every refrigerator. (a) The company sells 5000 pieces of colour T.V and 4000 pieces of refrigerator in a month. What is its profit or loss? (b) Find the number of T.V it must sell to have neither profit nor loss, if the     number of sold refrigerator is 100?

Dear student

Profit on one colour TV=Rs 80So, profit on 5000 pieces of colour TV=Rs 80×5000=Rs400000Loss on one refrigerator=Rs 60So, Loss on  4000 pieces of refrigerator=Rs 60×4000=Rs 240000So, Profit-Loss=Rs400000-Rs 240000=Rs 160000Since  amount is positiveSo we have profit of Rs 160000Now company sells  100 refrigratorsSo loss of comapny=Rs 60×100=Rs 6000Now in order to have neither profit nor loss it must  sell  such amount of TV  whose sum  of profit =Rs 6000profit on one tv=Rs 80No of TV sets=600080=Rs 75So, co must sell 75 TV sets  so that  there is no profit no loss

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