document.write( "Question 1183276: Cindy is selling tickets to the circus. On her first day, she sold 4 adult tickets and 8 children's tickets for a total of $108. On the second day, she sold 5 adult tickets and 6 children's tickets for a total of $105. What is the prices of an adult ticket and a Childs ticket? \n" ); document.write( "
Algebra.Com's Answer #813507 by greenestamps(13200)\"\" \"About 
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\n" ); document.write( "a = cost of adult ticket
\n" ); document.write( "c = cost of child ticket

\n" ); document.write( "4a+8c=108
\n" ); document.write( "5a+6c=105

\n" ); document.write( "Divide the first equation by the common factor of 4

\n" ); document.write( "a+2c=27

\n" ); document.write( "multiply by 5 to make the number of adult tickets the same as in the other equation

\n" ); document.write( "5a+10c=135

\n" ); document.write( "Compare the two equations

\n" ); document.write( "5a+10c=135
\n" ); document.write( "5a+6c=105
\n" ); document.write( "4c=30
\n" ); document.write( "c=7.50

\n" ); document.write( "The cost of each child ticket is $7.50

\n" ); document.write( "Substitute in either original equation to solve for the cost of an adult ticket

\n" ); document.write( "4a+8(7.50)=108
\n" ); document.write( "4a+60=108
\n" ); document.write( "4a=48
\n" ); document.write( "a=12

\n" ); document.write( "The cost of each adult ticket is $12

\n" ); document.write( "ANSWERS: adult ticket $12; child ticket $7.50

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