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A television set whose cash price is sh 30,000 can be bought by two method.The hire purchase method which requires the customer to pay one third of the HP price as deposit followed by ten equal monthly instalments.The HP price is 30% more than the cash price.The Tv can also be bought by paying half its cash price followed by three equal instalments together with interest rate of 5% per month on the remaining amount at the beginning of that month. Kanja bought the TV by the HP method while Ali bought it by the second method. Determine how much each paid on the third instalment.