document.write( "Question 1182442: The track team sold 40 t-shirts. Short sleeve t-shirts sold for $9.90 and long sleeve t-shirts sold for $12.75. In all, $421.65 was taken in.\r
\n" ); document.write( "\n" ); document.write( "How many short sleeve t-shirts were sold? \n" ); document.write( "
Algebra.Com's Answer #812451 by mananth(16946)\"\" \"About 
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x Number of half T shirts
\n" ); document.write( " y Number of Full T shirts
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\n" ); document.write( " x + y = 40.00
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\n" ); document.write( "9.90 x + 12.75 y = 421.65 .............2
\n" ); document.write( "Eliminate y
\n" ); document.write( "multiply (1)by -12.75
\n" ); document.write( "Multiply (2) by 1
\n" ); document.write( "-12.75 x -12.75 y = -510.00
\n" ); document.write( "9.90 x 12.75 y = 421.65
\n" ); document.write( "Add the two equations
\n" ); document.write( "-2.85 x = -88.35
\n" ); document.write( "/ -2.85
\n" ); document.write( "x = 31.00
\n" ); document.write( "plug value of x in (1)
\n" ); document.write( " x + y = 40
\n" ); document.write( "31.00 + y = 40
\n" ); document.write( " y = 9
\n" ); document.write( " y = 9
\n" ); document.write( "Ans x = 31
\n" ); document.write( " y = 9.00
\n" ); document.write( " 31 Number of half T shirts
\n" ); document.write( " 9 Number of Full T shirts
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