document.write( "Question 117406: Adult tickets for a play cost $18 and child tickets cost $2. If there were 20 people at a performance and the theater collected $88 for ticket sales, how many childern attended the play? \n" ); document.write( "
Algebra.Com's Answer #85416 by josmiceli(19441)![]() ![]() You can put this solution on YOUR website! C = number of children \n" ); document.write( "A = number of adults \n" ); document.write( "A + C = 20 \n" ); document.write( "C = 20 - A \n" ); document.write( "18A + 2C = 88 \n" ); document.write( "18A + 2(20-A) = 88 \n" ); document.write( "18A + 40 - 2A = 88 \n" ); document.write( "16A = 48 \n" ); document.write( "A = 3 \n" ); document.write( "A + C = 20 \n" ); document.write( "C = 20 - 3 \n" ); document.write( "C = 17 \n" ); document.write( "17 children attended the play \n" ); document.write( "check answer \n" ); document.write( "17 + 3 = 20, so 20 people attended \n" ); document.write( "18A + 2C = 88 \n" ); document.write( "18*3 + 2*17 = 88 \n" ); document.write( "54 + 34 = 88 \n" ); document.write( "88 = 88 \n" ); document.write( "OK \n" ); document.write( " |