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The length of a rectangle is increased by $50\textbackslash\%$ and the width is decreased by $20\textbackslash\%$. What percent of the old area is the new area? (adapted from 2009 AMC 8, Question \#8) 
Overseas Competition->Knowledge Point->Word Problem Modules->Solving Problems Involving Fractions and Percentages->Percentages Word Problems
$1.5\times 0.8= 120\textbackslash\%$. 