Question
Monthly income of A is Rs. 5500 and he saves 34% 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. 1870 and Rs. 3630, respectively. Monthly expenditure of A now = 0.65 × 3630 = Rs. 2359.5 Monthly savings of A now = 1.35 × 1870 = Rs. 2524.5 Monthly income of A now = 2359.5 + 2524.5 = Rs. 4884 Desired percentage decrease = [(5500 – 4884)/5500] × 100 = 11.2%
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