Question
Monthly income of A is Rs. 6000 and he saves 25% 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. 1500 and Rs. 4500, respectively. Monthly expenditure of A now = 0.65 × 4500 = Rs. 2925 Monthly savings of A now = 1.35 × 1500 = Rs. 2025 Monthly income of A now = 2925 + 2025 = Rs. 4950 Desired percentage decrease = [(6000 – 4950)/6000] × 100 = 17.5%
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