document.write( "Question 546168: Please help me with this question. Our school does not provide books so this is all I got. \r
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document.write( "DeShawn's school is selling tickets to a choral performance. On the first day of tickets sales the school sold 4 Adult tickets and 11 child tickets for a total of $65. The school took in $142 on the second day by selling 14 adult tickets and 10 child tickets. Find the price of an adult ticket and the price of a child ticket.\r
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document.write( "So I figured:
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document.write( "4A + 11B = 65
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document.write( "and
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document.write( "14A + 10B = 142\r
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document.write( "Can you help me from here?\r
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document.write( "Thanks in advance.
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document.write( "Jenny
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Algebra.Com's Answer #355897 by scott8148(6628)![]() ![]() You can put this solution on YOUR website! good so far...\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "multiplying 1st eqn by -7 ___ -28A - 77B = -455\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "multiplying 2nd eqn by 2 ___ 28A + 20B = 284\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "add the two eqns to eliminate A; then solve for B and substitute back to find A\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the choice of multipliers is based on the common factors of the coefficients of the eliminated terms \n" ); document.write( "___ factors of 4, 2 and 2 \n" ); document.write( "___ factors of 14, 2 and 7 \n" ); document.write( "___ ignore the common factor 2's and use the 2 and 7; changing one sign to enable elimination \n" ); document.write( " |