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Let the monthly salary of A be Rs. ‘x’ Amount spent on food = Rs. 0.30x Amount spent on rent = Rs. 0.22x Amount received by brother = (x – 0.30x – 0.22x) × 0.40 = 0.192x So according to question: => 0.22x – 0.192x = 1400 => 0.028x = 1400 => x = 50000 So, the amount spent on food = 0.30 × 50000 = Rs. 15000
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