Question
Monthly income of A is Rs. 12000 and he saves 44% of his
monthly income. If monthly expenditure of A is decreased by 35% while his monthly savings is increased by 35% then find the increase or decrease in his monthly income.Solution
Monthly savings and expenditure of A initially is Rs. 5280 and Rs. 6720, respectively. Monthly expenditure of A now = 0.65 × 6720 = Rs. 7128 Monthly savings of A now = 1.35 × 5280 = Rs. 4368 Monthly income of A now = 7128 + 4368 = Rs. 11496 Desired percentage decrease = [(12000 – 11496)/12000] × 100 = 4.2%
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