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Let, the expenditure on the product be Rs x. Let, the earlier price of the commodity be Rs y/kg. ∴ Price of the commodity now = y + y × 25/100 = 1.25y ∴ Earlier consumption = x/y kg ∴ Consumption now = x/1.25y kg ∴ Reduction in consumption = x/y – x/1.25y = x/5y kg ∴ Required percentage = (x/5y)/(x/y) × 100% = 20% India’s #1 Learning Platform Start Complete Exam Preparation
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