document.write( "Question 869724: A patron tips 21%. The total cost of bill including tip is $52.03. How much was the cost of the bill before the tip? \n" ); document.write( "
Algebra.Com's Answer #524351 by jim_thompson5910(35256)\"\" \"About 
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Let x = the cost of the bill before the tip\r
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\n" ); document.write( "\n" ); document.write( "21% of the bill is the same as 0.21x\r
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\n" ); document.write( "\n" ); document.write( "Add this to the bill to get x+0.21x = 1.21x\r
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\n" ); document.write( "\n" ); document.write( "So the total bill (meal+tip) is 1.21x and this is equal to 52.03. Set the two equal and solve for x\r
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\n" ); document.write( "\n" ); document.write( "1.21x = 52.03\r
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\n" ); document.write( "\n" ); document.write( "x = 52.03/1.21\r
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\n" ); document.write( "\n" ); document.write( "x = 43\r
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\n" ); document.write( "\n" ); document.write( "The original bill (without tip) is $43
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