document.write( "Question 305441: The Welzer's average phone bill increased from $16.65 to $19.98. What is the Percent increase. \n" ); document.write( "
Algebra.Com's Answer #218668 by london maths tutor(243)\"\" \"About 
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phone bill increase : $19.98 - $16.65 = $3.33\r
\n" ); document.write( "\n" ); document.write( "Percentage increase : \"+%283.33%2F16.65%29%2A100%25+\"
\n" ); document.write( " = 20%
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