Rina bought a handbag for＄$$60$$ at a discount of $$20\textbackslash\%$$. Ana paid＄$$67.5$$ for the same handbag. What was the discount rate given to Ana? 
Overseas Competition->Knowledge Point->Word Problem Modules->Word Problems in Economics->Basic Profit and Loss Concepts
Original price: $$60\div \left( 1-20\textbackslash\% \right)=75$$.  Discount for Ana: $$\left( 75-67.5 \right)\div 75=10\textbackslash\%$$. 