document.write( "Question 156589: . A total of 700 tickets were sold for a musical. Senior citizen tickets sold for $15, children tickets sold for $20, and adult tickets sold for $25; the total earnings from ticket sales was $15,750. Five times more children tickets were sold than senior citizen tickets. How many tickets of each type were sold? Set up a system of three equations and three unknowns, use an augmented matrix to solve\r
\n" ); document.write( "\n" ); document.write( "I have most of the matrix figured out Here is what I got\r
\n" ); document.write( "\n" ); document.write( "[ 1 1 1 700 ]
\n" ); document.write( "[ 4 5 3 3,140 ] divided by 5
\n" ); document.write( "[ 0 5\r
\n" ); document.write( "\n" ); document.write( "I am struggling with the bottom half of the matrix. Specifically what numbers do I put in the last two columns. I am also struggling solving the matrix. Thanks for any help. \n" ); document.write( "

Algebra.Com's Answer #115387 by scott8148(6628) $\"\"$ $\"About$

You can put this solution on YOUR website!
\"A total of 700 tickets were sold for a musical\" __ s+c+a=700\r
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\n" ); document.write( "\n" ); document.write( "\"Senior citizen tickets sold for $15, children tickets sold for $20, and adult tickets sold for $25; the total earnings from ticket sales was $15,750\" __ 15s+20c+25a=15750 __ 3s+4c+5a=3150\r
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\n" ); document.write( "\n" ); document.write( "\"Five times more children tickets were sold than senior citizen tickets\" __ c=5s __ -5s+c+0a=0\r
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\n" ); document.write( "\n" ); document.write( "[1 1 1 | 700]
\n" ); document.write( "[3 4 5 | 3150]
\n" ); document.write( "[-5 1 0 | 0] \n" ); document.write( "

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