document.write( "Question 435560: the rocking pebbles are playing a concert at big state university the auditoruim seats 2200 people.the concert manager decides to sell some tickets at $10 each and the rest at $15 each. how many of each kind should the manager sell if he wants ticket sales to total $26,600? how do i do this \n" ); document.write( "

Algebra.Com's Answer #301451 by mananth(16946) $\"\"$ $\"About$

You can put this solution on YOUR website!
$10 tickets x
\n" ); document.write( "$15 tickets y\r
\n" ); document.write( "\n" ); document.write( "1 x + 1 y = 2200 .............1
\n" ); document.write( "10 0 + 15 y = 26600 .............2\r
\n" ); document.write( "\n" ); document.write( "1 x + 1 y = 2200 .............1
\n" ); document.write( "10 x + 15 y = 26600 .............2
\n" ); document.write( "Eliminate y
\n" ); document.write( "multiply (1)by -15
\n" ); document.write( "Multiply (2) by 1
\n" ); document.write( "-15x-15y=-33000
\n" ); document.write( "10x+15y=26600
\n" ); document.write( "Add the two equations
\n" ); document.write( "-5x=-6400
\n" ); document.write( "/-5
\n" ); document.write( "x=1280 tickets
\n" ); document.write( "plug value of x in (1)
\n" ); document.write( "x+y=2200
\n" ); document.write( "1280+y=2200
\n" ); document.write( "y = 2200 -1280
\n" ); document.write( "y = 920
\n" ); document.write( "y = 920 tickets \n" ); document.write( "

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