2. The price of sugar is increased by 15% last month and decreased by 20% this month,
Find the percentage change in two months.
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Assume that the price of sugar was Rs. 100/ kg in the beginning.
Increase in the first month by 15% means the new price is 100+ 15 (100+15/100*100)= 115
Decrease in the second month by 20% means decrease by 20% of 115= 20/100*115= 23.
Therefore price after 2 months = 115-23= 92
Thus percentage decrease after 2 months over the price at the beginning = (100-92)/100 = 8%
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