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Let the incomes of ‘A’ and ‘B’ be Rs. 5x and Rs. 3x, respectively Let their expenditures be Rs. 3y and 4y, respectively According to the question, 5x – 3y = 43000….. (1) And, 3x – 4y = 6000…. (2) On solving equation (1) and (2), we get x = 14000 and y = 9000 Amount spent by ‘A’ and ‘B’, together on food = 0.25(5x + 3x) = Rs. 28000 Required expenditure = (3y + 4y) – 28000 = Rs. 35000
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