document.write( "Question 1114278: The income from a student production was $21,500. The price of a student ticket was $4, and nonstudent tickets were sold at $7 each. Five thousand tickets were sold. How many tickets of each kind were sold? \n" ); document.write( "
Algebra.Com's Answer #729263 by ikleyn(52781)\"\" \"About 
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document.write( "4x + 7*(5000-x) = 21500    (\"money\" equation)\r\n" );
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document.write( "4x + 35000 - 7x = 21500\r\n" );
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document.write( "-3x = 21500 - 35000 = -13500   ====>  x = \"%28-13500%29%2F%28-3%29\" = 4500.\r\n" );
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document.write( "Answer.  4500 student tickets and 5000-4500 = 500 non-student tickets were sold.\r\n" );
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document.write( "Check.   4*4500 + 7*500 = 21500 dollars.   ! Correct !\r\n" );
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\n" ); document.write( "It is a standard ticket problem.\r
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\n" ); document.write( "\n" ); document.write( "Read the lessons\r
\n" ); document.write( "\n" ); document.write( "    - Using systems of equations to solve problems on tickets \r
\n" ); document.write( "\n" ); document.write( "    - Three methods for solving standard (typical) problems on tickets\r
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\n" ); document.write( "\n" ); document.write( "Learn from these lessons on how to solve such problems once for all.\r
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\n" ); document.write( "\n" ); document.write( "Also,  you have this free of charge online textbook in ALGEBRA-I in this site\r
\n" ); document.write( "\n" ); document.write( "    - ALGEBRA-I - YOUR ONLINE TEXTBOOK.\r
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\n" ); document.write( "\n" ); document.write( "The referred lessons are the part of this online textbook under the topic \"Systems of two linear equations in two unknowns\".\r
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