document.write( "Question 880012: For groups of four or more diners, many restaurants add a 15% gratuity and a tax of 8% to the bill. If the bill (including gratuity and tax) for four people came to $193, how much was the tip?
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Algebra.Com's Answer #531193 by JulietG(1812) $\"\"$ $\"About$

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Total = 100% bill + 15% gratuity + 8% tax.
\n" ); document.write( "193 = 1.23x
\n" ); document.write( "Divide each side by 1.23
\n" ); document.write( "x = 156.91
\n" ); document.write( "That's the bill.
\n" ); document.write( "8% of the bill (for the tax) is 156.91 * .08, or $12.55
\n" ); document.write( "15% gratuity is 156.91 * .15, or $23.54 \n" ); document.write( "

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