Question
Monthly income of A is Rs. 7000 and he saves 28% 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. 1960 and Rs. 5040, respectively. Monthly expenditure of A now = 0.65 × 5040 = Rs. 3276 Monthly savings of A now = 1.35 × 1960 = Rs. 2646 Monthly income of A now = 3276 + 2646 = Rs. 5922 Desired percentage decrease = [(7000 – 5922)/7000] × 100 = 15.4%
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