其它
Owen sees an archery right after he entered the carnival. After Owen takes 20 shots, he has made $55 \textbackslash\%$ of his shots. After he takes 5 more shots, he raises his percentage to $56 \textbackslash\%$. How many of the last 5 shots did she make?~ (adapted from 2004 AMC 8, Question\#6) 
Overseas Competition->Knowledge Point->Word Problem Modules->Solving Problems Involving Fractions and Percentages->Percentages Word Problems
Owen made $0.55 * 20=11$ shots originally. Letting $x$ be the number of shots she made, we have $\frac{11+x}{25}=0.56$. Solving for $x$ gives us $x=$ (C) 3 