If the price of sugar increased by 25%, by how much percent a housewife should reduce the consumption…
The correct choice is: “20%” Expenditure = price × consumption. If the price becomes 1.25 times, consumption must become 1/1.25 = 0.8 times to keep the expenditure the same,…
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If the price of sugar increased by 25%, by how much percent a housewife should reduce the consumption so as not to increase the expenditure.
Answer and explanation
Correct answer B
The correct choice is: “20%”
Expenditure = price × consumption. If the price becomes 1.25 times, consumption must become 1/1.25 = 0.8 times to keep the expenditure the same, which is a reduction of 20%.
Shortcut: reduction = r/(100 + r) × 100 = 25/125 × 100 = 20%.
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