document.write( "Question 459885: Kara purchased train tickets for 3 adults and 4 children. The total cost for 3 adults and 4 children
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document.write( "was $136. Brian purchased 2 adult tickets and 3 children tickets for $97. Find the price of an
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document.write( "adult’s ticket. \n" );
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Algebra.Com's Answer #315386 by mananth(16946)![]() ![]() You can put this solution on YOUR website! adult ticket $ x \n" ); document.write( "child ticket$ y \n" ); document.write( " \n" ); document.write( "3x+4y=136 .............1 Kara \n" ); document.write( "2x+3y=97 .............2 Brian \n" ); document.write( " \n" ); document.write( "multiply (1)by -3 \n" ); document.write( "Multiply (2) by 4 \n" ); document.write( "-9x-12y=-408 \n" ); document.write( "8x+12y= 388 \n" ); document.write( "Add the two equations \n" ); document.write( "-x=-20 \n" ); document.write( "/-1 \n" ); document.write( "x=20 \n" ); document.write( "plug value of x in (1) \n" ); document.write( "3x+4y=136 \n" ); document.write( "60+4y=136 \n" ); document.write( "4y=136-60 \n" ); document.write( "4y=76 \n" ); document.write( "y=19 \n" ); document.write( " \n" ); document.write( " |