Question
Monthly income of A is Rs. 3500 and he saves 42% 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. 1470 and Rs. 2030, respectively. Monthly expenditure of A now = 0.65 × 2030 = Rs. 1984.5 Monthly savings of A now = 1.35 × 1470 = Rs. 1319.5 Monthly income of A now = 1984.5 + 1319.5 = Rs. 3304 Desired percentage decrease = [(3500 – 3304)/3500] × 100 = 5.6%
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