Let the monthly salary of Rajesh be Rs. ‘x’ Amount spent on food = Rs. 0.40x Amount spent on rent = Rs. 0.20x Amount received by brother = (x - 0.20x - 0.40x) x 0.30 = 0.40x x 0.30 = 0.12x So according to question: 0.20x - 0.12x = 2500 0.08x = 2500 x = 31250 So, the amount spent on food = 0.40 x 31250 = Rs. 12500
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