document.write( "Question 1117544: Suppose that there are two types of tickets to a show: advance and same-day. Advance tickets cost
\n" ); document.write( "$35
\n" ); document.write( " and same-day tickets cost
\n" ); document.write( "$15
\n" ); document.write( ". For one performance, there were
\n" ); document.write( "50
\n" ); document.write( " tickets sold in all, and the total amount paid for them was
\n" ); document.write( "$1350
\n" ); document.write( ".How many tickets of each type were sold? \r
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Algebra.Com's Answer #732655 by josmiceli(19441)\"\" \"About 
You can put this solution on YOUR website!
Let \"a\" = number of advance tickets sold
\n" ); document.write( "Let \"b\" = number of same-day tickets sold
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\n" ); document.write( "(1) \"+a+%2B+b+=+50+\"
\n" ); document.write( "(2) \"+35a+%2B+15b+=+1350+\"
\n" ); document.write( "-------------------------------
\n" ); document.write( "(1) \"+15a+%2B+15b+=+750+\"
\n" ); document.write( "Subtract (1) from (2)
\n" ); document.write( "(2) \"+35a+%2B+15b+=+1350+\"
\n" ); document.write( "(1) \"+-15a+-+15b+=+-750+\"
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\n" ); document.write( "\"+20a+=+600+\"
\n" ); document.write( "\"+a+=+30+\"
\n" ); document.write( "and
\n" ); document.write( "(1) \"+30+%2B+b+=+50+\"
\n" ); document.write( "(1) \"+b+=+20+\"
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\n" ); document.write( "30 advance tickets were sold
\n" ); document.write( "20 same-day tickets were sold
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