document.write( "Question 147896: Martha and Sally had lunch together on Tuesday. Sally paid $2 more than Martha. If the total bill was $5.64. How much did Sally pay for her lunch?\r
\n" );
document.write( "\n" );
document.write( "I need the answer :) \n" );
document.write( "
Algebra.Com's Answer #108279 by Fombitz(32388)![]() ![]() You can put this solution on YOUR website! Let's call the cost of Martha's lunch, M. \n" ); document.write( "Sally's lunch cost will be S. \n" ); document.write( "You know the total was $5.64. \n" ); document.write( "1. \n" ); document.write( "You also know that Sally paid $2.00 more than Martha. \n" ); document.write( "2. \n" ); document.write( "If you substitute the value for S in eq. 2 into eq. 1, you can solve for M. \n" ); document.write( "1. \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "Now you know Martha's lunch was $1.82, use eq. 2 to solve for Sally's cost, \n" ); document.write( "2. \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "Sally paid $3.82. \n" ); document.write( " |