document.write( "Question 124080: include systems of equations for solving\r
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document.write( "Adult tickets for a play cost $14 and child tickets cost $3. If there were 26 people at a performance and the theater collected $199 from tickets, how many adults and how many children attended the play? \n" );
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Algebra.Com's Answer #91117 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! Adult tickets for a play cost $14 and child tickets cost $3. If there were 26 people at a performance and the theater collected $199 from tickets, how many adults and how many children attended the play? \n" ); document.write( ": \n" ); document.write( "Let a = no. of adults \n" ); document.write( "and \n" ); document.write( "Let c = no. of children \n" ); document.write( ": \n" ); document.write( "Write an equation for each statement/phrase: \n" ); document.write( "\"If there were 26 people at a performance\" \n" ); document.write( "a + c = 26 \n" ); document.write( "Subtract a from both sides: \n" ); document.write( "c = (26-a); we can use this for substitution: \n" ); document.write( ": \n" ); document.write( "\"Adult tickets for a play cost $14 and child tickets cost $3...the theater collected $199 from tickets,\" \n" ); document.write( " 14a + 3c = $199 \n" ); document.write( ": \n" ); document.write( "how many adults and how many children attended the play? \n" ); document.write( ": \n" ); document.write( "Substitute (26-a) for c in the above equation, find a \n" ); document.write( "14a + 3(26-a) = 199 \n" ); document.write( "14a + 78 - 3a = 199 \n" ); document.write( "14a - 3a = 199 - 78 \n" ); document.write( "11a = 121 \n" ); document.write( "a = \n" ); document.write( "a = 11 adults \n" ); document.write( ": \n" ); document.write( "We know c = (26-a); substitute 11 for a \n" ); document.write( "c = 26 - 11 \n" ); document.write( "c = 15 children \n" ); document.write( ": \n" ); document.write( ": \n" ); document.write( "Check solutions in the $$ equation \n" ); document.write( "14a + 3c = $199 \n" ); document.write( "14(11) + 3(15) = \n" ); document.write( "154 + 45 = 199; confirms our solutions \n" ); document.write( " |