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The price of an item that cost 80 shekels was raised by $25 \%$. What is the new price?
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Since $25 \%$ was added to the old price, the new price is $125 \%$ of the old price $(100 \%+25 \%)$. Therefore, you must calculate $125 \%$ of 80 . Substitute hundredths for percent and solve: $\frac{125}{100} \cdot 80=100$. Thus, the new price is 100 shekels.
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