document.write( "Question 1119317: A total of 290 people attended the highschool play. The admission prices were $11 for​ adults, $7 for high school​ students, and $2 for children not yet in high school. The ticket sales totaled $1750. The principal suggested that next year they raise prices to $15 for​ adults, $8 for high school​ students, and $3 for children not yet in high school. He said that if exactly the same number of people attend next​ year, the ticket sales at the higher prices will total $2280. How many​ adults, high school​ students, and children not yet in high school attended this​ year? \n" ); document.write( "
Algebra.Com's Answer #734826 by Shin123(626)\"\" \"About 
You can put this solution on YOUR website!
\"system%28x%2By%2Bz=290%2C11x%2B7y%2B2z=1750%2C15x%2B8y%2B3z=2280%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"system%2812x%2B8y%2B3z=2040%2C15x%2B8y%2B3z=2280%29\"\r
\n" ); document.write( "\n" ); document.write( "\"-3x=-240\"\r
\n" ); document.write( "\n" ); document.write( "\"highlight%28x=80%29\"\r
\n" ); document.write( "\n" ); document.write( "\"system%28y%2Bz=210%2C7y%2B2z=870%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"system%282y%2B2z=420%2C7y%2B2z=870%29\"\r
\n" ); document.write( "\n" ); document.write( "\"-5y=-450\"\r
\n" ); document.write( "\n" ); document.write( "\"highlight%28y=90%29\"\r
\n" ); document.write( "\n" ); document.write( "\"2z=240\"\r
\n" ); document.write( "\n" ); document.write( "\"highlight%28z=120%29\"
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