document.write( "Question 292269: Why is $10 to $20 a 100% increase, while $20 to $10 is a 50% decrease. Explain your answer. \n" ); document.write( "
Algebra.Com's Answer #211160 by Alan3354(69443)\"\" \"About 
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Why is $10 to $20 a 100% increase, while $20 to $10 is a 50% decrease. Explain your answer.
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\n" ); document.write( "It's based on what the change is from.
\n" ); document.write( "From 10 to 20 starts with 10. 10/10 is 100%
\n" ); document.write( "From 20 to 10 starts with 20. 10/20 is 50%
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\n" ); document.write( "What you start with is the base.
\n" ); document.write( "If you try to do it any other way, it's a lot less meaningful.
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