document.write( "Question 859338: The prom committee sells t-shirts to raise money for the prom. The profit from sales of 80 short sleeve t-shirts and 100 long sleeve t-shirts is $320. Profit from sales of 80 short sleeve t-shirts and 75 long sleeve t-shirts is $270. How much profit do they earn for each short sleeve t-shirt sale? \n" ); document.write( "
Algebra.Com's Answer #517700 by lwsshak3(11628)\"\" \"About 
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The prom committee sells t-shirts to raise money for the prom. The profit from sales of 80 short sleeve t-shirts and 100 long sleeve t-shirts is $320. Profit from sales of 80 short sleeve t-shirts and 75 long sleeve t-shirts is $270. How much profit do they earn for each short sleeve t-shirt sale?
\n" ); document.write( "***
\n" ); document.write( "let x=number of short sleeve t-shirts sold
\n" ); document.write( "let y=number of long sleeve t-shirts sold
\n" ); document.write( "...
\n" ); document.write( "80x+100y=320
\n" ); document.write( "80x+75y=270
\n" ); document.write( "subtract:
\n" ); document.write( "25y=50
\n" ); document.write( "y=50/25
\n" ); document.write( "y=2
\n" ); document.write( "...
\n" ); document.write( "80x+100y=320
\n" ); document.write( "80x+200=320
\n" ); document.write( "80x=120
\n" ); document.write( "x=120/80
\n" ); document.write( "x=1.5
\n" ); document.write( "How much profit do they earn for each short sleeve t-shirt sale? $1.50
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