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3 shopkeepers A, B, C are using polythene,handmade bags (prepared by prisoners), and newspaper’s envelope as carry bags. It is found that the shopkeepers A, B, C are using (20,30,40) , (30,40,20,) , (40,20,30) polythene , handmade bags and newspapers envelopes respectively. The shopkeepers A, B, C spent Rs.250, Rs.220 & Rs.200 on these carry bags respectively .Find the cost of each carry bags using matrices.