Question
If the price of sugar increases by 40%, by what
percentage should a family reduce its sugar consumption so that the family's expenses do not increase?Solution
When price increases by r% then consumption is reduced by (r/r+100) ×100% and Expenses will remain the same. r = 40% (increase in price) Reduction in consumption = (40/140) x 100 =400/14 =28(4/7) %.
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