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At the 2018 Tompkins County Fair a vendor is offering a "fair special" on hats. If you buy one hat at the regular price of $\textbackslash$ 30$, you get a second hat at a $40\textbackslash\%$ discount, and a third pair at half the regular price. James took advantage of the "fair special" to buy three hats. What percentage of the $\textbackslash$ 90$ regular price did he save? (adapted from 2013 AMC 8, Question \#12) 
Overseas Competition->Knowledge Point->Word Problem Modules->Solving Problems Involving Fractions and Percentages->Percentages Word Problems
First, the amount of money one will pay for three hats without the discount $=\textbackslash$ 90$. Then, find the amount of money using the discount: $30+0.6 \times 30+\frac{1}{2} \times 30=\textbackslash$ 63$. Finding the percentage yields $\frac{63}{90}=70\textbackslash\%$ To find the percent saved, we have $100 \textbackslash\%-70\textbackslash\%= 30\textbackslash\%$ 