The price of sugar increases by 20%, by what % house-wife should reduce the consumption of sugar so that expenditure on sugar can be same as before.
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Let think that if a house wife was bringing 100kg sugar at $100
But now 100 kg at $120
$1=100/$120
$100=(100/120 ×100) kg =250/3 kg
reduction =(100-250/3)%=(300/3-250/3)%
50/3% or 16 whole 2/3
But now 100 kg at $120
$1=100/$120
$100=(100/120 ×100) kg =250/3 kg
reduction =(100-250/3)%=(300/3-250/3)%
50/3% or 16 whole 2/3
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