The price of three commodities A, B and C in a shop are Rs. 10, 20 and 30 respectively. A man x buys 8 units of A, 7 units of B and 6 units of C. A man Y buys 6 units of A, 7 units of B and 8 units of C, show in matrix notation, the prices of the commodities, quantities bought and the amount spent.
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b jn bxn a b c d e f j k l m no p q
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