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 :)
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Algebra.Com's Answer #108279 by Fombitz(32388)\"\" \"About 
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.\"M%2BS=5.64\"
\n" ); document.write( "You also know that Sally paid $2.00 more than Martha.
\n" ); document.write( "2.\"S=2.00%2BM\"
\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.\"M%2BS=5.64\"
\n" ); document.write( "\"M%2B%282.00%2BM%29=5.64\"
\n" ); document.write( "\"2.00%2B2M=5.64\"
\n" ); document.write( "\"2M=3.64\"
\n" ); document.write( "\"M=1.82\"
\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.\"S=2.00%2BM\"
\n" ); document.write( "\"S=2.00%2B1.82\"
\n" ); document.write( "\"S=3.82\"
\n" ); document.write( "Sally paid $3.82.
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