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At the "Think Flea Market", a vendor is offering a "fair special" on plushies. If you buy one plushie at the regular price of $\textbackslash$ 50$, you get a second one at a $40 \textbackslash\%$ discount, and a third one at half the regular price. Owen takes advantage of the "fair special" to buy three plushies. What percentage of the $\textbackslash$ 150$ regular price will 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, find the amount of money one will pay for three sandals without the discount. We have $\textbackslash$ 50 \times 3$ sandals $=\textbackslash$ 150$. Then, find the amount of money using the discount: $50+0.6 \times 50+\frac{1}{2} \times 50=\textbackslash$ 105$. Finding the percentage yields $\frac{105}{150}=70 \textbackslash\%$ To find the percent saved, we have $100 \textbackslash\%-70 \textbackslash\%=(\text{B}) 30$ 