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<em>Your question is:</em>
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<em>A store buys a shirt for $10 and marks it up 25%. What is the sale price of the shirt ?</em>
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<em>Think of it this way. Temporarily convert the price of the shirt to $100. What’s 25% of 100? Well, 25, of course! Now add the $25 to the $100 to get $125. Now divide by ten to bring the total down to $12.50</em>