document.write( "Question 419049: The members of the band were selling t-shirts and school banners for a fundraiser. Justine sold 13 tshirts and 10 banners for a total of $145.00. Carlos sold 15 tshirts and 6 banners for a total of $141.00. How much did the band charge for tshirts? How much for banners? \n" ); document.write( "
Algebra.Com's Answer #293132 by mananth(16946)\"\" \"About 
You can put this solution on YOUR website!
let T shirts cost $x
\n" ); document.write( "Let banners cost y
\n" ); document.write( "...
\n" ); document.write( "13x+10y=145
\n" ); document.write( "15x+6y= 141\r
\n" ); document.write( "\n" ); document.write( ".....
\n" ); document.write( "13x+10y =145 .............1
\n" ); document.write( "15x+6y= 141 .............2
\n" ); document.write( "
\n" ); document.write( "multiply (1)by 3
\n" ); document.write( "Multiply (2) by -5
\n" ); document.write( "39x+30y =435
\n" ); document.write( "-75x-30 y=-705
\n" ); document.write( "
\n" ); document.write( "Add the two equations
\n" ); document.write( "
\n" ); document.write( "-36x=-270
\n" ); document.write( "/-36
\n" ); document.write( "
\n" ); document.write( "x= $7.5
\n" ); document.write( "
\n" ); document.write( "plug value of x in (1)
\n" ); document.write( "
\n" ); document.write( "13x+10y =145
\n" ); document.write( "97.5+10y=145
\n" ); document.write( "10y=145 -97.5
\n" ); document.write( "10y=47.5
\n" ); document.write( "y= $4.75
\n" ); document.write( " \n" ); document.write( "
\n" );