document.write( "Question 430644: For large parties, many restaurants automatically add an 18% gratuity to the bill. If the total bill,
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document.write( " including gratuity is $163.43, what was the bill before adding the gratuity? \n" );
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Algebra.Com's Answer #299057 by jorel1380(3719)![]() ![]() You can put this solution on YOUR website! If the bill after gratuity is $163.43, and the restaurant added 18%, then:\r \n" ); document.write( "\n" ); document.write( "1(X)+18%(X)=163.43 \n" ); document.write( "(100%+18%)(X)=163.43 \n" ); document.write( "1.18X=\"\" \n" ); document.write( "X=163.43/1.18 \n" ); document.write( "X=138.5\r \n" ); document.write( "\n" ); document.write( "The meal cost $138.50. \n" ); document.write( " |