Question
Monthly income of A is Rs. 6500 and he saves 36% 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. 2340 and Rs. 4160, respectively. Monthly expenditure of A now = 0.65 × 4160 = Rs. 3159 Monthly savings of A now = 1.35 × 2340 = Rs. 2704 Monthly income of A now = 3159 + 2704 = Rs. 5863 Desired percentage decrease = [(6500 – 5863)/6500] × 100 = 9.8%
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