document.write( "Question 1036571: A teacher buys 50 train tickets for a school trip for a total cost of $1,200. She buys x number of student tickets for $20 each. She also buys y number of adult tickets for $30 each. \n" ); document.write( "
Algebra.Com's Answer #651251 by Boreal(15235)![]() ![]() You can put this solution on YOUR website! x+y=50; \n" ); document.write( "20x+30y=1200 \n" ); document.write( "20x+20y=1000, multiplying the top by 20 \n" ); document.write( "-20x-30y=-1200, subtracting the second. \n" ); document.write( "-10y=-200 \n" ); document.write( "y=20 adult tickets ($600) \n" ); document.write( "x=30 student tickets ($600) \n" ); document.write( "They add to $1200. \n" ); document.write( " \n" ); document.write( " |