document.write( "Question 721679: you are selling tickets to the school play. on friday night you made $134 by selling 13 student tickets and 7 adult tickets. On saterday night, you made $108 by selling 10 student tickets and 6 adult tickets. how much do the tickets cost?\r
\n" ); document.write( "\n" ); document.write( "total sold=
\n" ); document.write( "student tickets - 23
\n" ); document.write( "adult tickets - 13
\n" ); document.write( "total cost of tickets - 242
\n" ); document.write( "what do i do from here?????help?
\n" ); document.write( "

Algebra.Com's Answer #442468 by josmiceli(19441)\"\" \"About 
You can put this solution on YOUR website!
With this kind of problem, what they want you to
\n" ); document.write( "do is set up 2 equations and solve by some
\n" ); document.write( "means- elimination, substitution, etc.
\n" ); document.write( "Let \"+s+\" = the cost of a student ticket
\n" ); document.write( "Let \"+a+\" = the cost of an adult ticket
\n" ); document.write( "---------------------------------
\n" ); document.write( "(1) \"+13s+%2B+7a+=+134+\"
\n" ); document.write( "(2) \"+10s+%2B+6a=+108+\"
\n" ); document.write( "---------------------
\n" ); document.write( "Multiply both sides of (1) by \"+10+\"
\n" ); document.write( "Multiply both sides of (2) by \"+13+\"
\n" ); document.write( "Then subtract (1) from (2)
\n" ); document.write( "(2) \"+130s+%2B+78a+=+1404+\"
\n" ); document.write( "(3) \"+-130s+-+70a+=+-1340+\"
\n" ); document.write( "\"+8a+=+64+\"
\n" ); document.write( "\"+a+=+8+\"
\n" ); document.write( "and, since
\n" ); document.write( "(2) \"+10s+%2B+6a=+108+\"
\n" ); document.write( "(2) \"+5s+%2B+3%2A8+=+54+\"
\n" ); document.write( "(2) \"+5s+=+54+-+24+\"
\n" ); document.write( "(2) \"+5s+=+30+\"
\n" ); document.write( "(2) \"+s+=+6+\"
\n" ); document.write( "The cost of a student ticket is $6
\n" ); document.write( "The cost of an adult ticket is $8
\n" ); document.write( "check:
\n" ); document.write( "(1) \"+13s+%2B+7a+=+134+\"
\n" ); document.write( "(1) \"+13%2A6+%2B+7%2A8+=+134+\"
\n" ); document.write( "(1) \"+78+%2B+56+=+134+\"
\n" ); document.write( "(1) \"+134+=+134+\"
\n" ); document.write( "OK
\n" ); document.write( "
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