Monthly savings of ‘A’ = (6500 + 700)/2 = Rs. 3600 Monthly expenditure of ‘A’ = 6500 – 3600 = Rs. 2900 Increased monthly expenditure of ‘A’ = 1.40 × 6500 – 1.375 × 3600 = Rs. 4150 Desired increase = 4150 – 2900 = Rs. 1250
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