document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=60876>Question 60876</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Adult tickets cost $18.00 children cost $8.00 there were 21 people total at the theatre and they  collected $288.00 how many children attended? </SPAN>\n" );
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document.write( "Adult tickets cost $18.00 children cost $8.00 there were 21 people total at the theatre and they  collected $288.00 how many children attended?\r<BR>\n" );
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document.write( "solution:\r<BR>\n" );
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document.write( "let us take number of children  = x\r<BR>\n" );
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document.write( "then number of adults           =  21 - x  {because total number is 21\r<BR>\n" );
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document.write( "cost of one child's ticket      = $ 8\r<BR>\n" );
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document.write( "so cost of  x childen ticket    = x * $ 8\r<BR>\n" );
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document.write( "cost of one adult ticket        = $ 18\r<BR>\n" );
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document.write( "so cost of (21 - x ) tickets    = (21 -x ) * $ 18\r<BR>\n" );
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document.write( "Total money collected           = $ 288\r<BR>\n" );
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document.write( "this can be combined like this,\r<BR>\n" );
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document.write( "( 21 - x )* 18 +  x * 8         = $ 288\r<BR>\n" );
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document.write( "remove the brackets by multiplying terms, we have,\r<BR>\n" );
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document.write( "      21 * 18 - x * 18 + x * 8        = $ 288\r<BR>\n" );
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document.write( "                  378 - 18x + 8x      =  288\r<BR>\n" );
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document.write( "                         378  - 10x   = 288\r<BR>\n" );
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document.write( "                        378  - 288    = 10 x\r<BR>\n" );
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document.write( "                                90    = 10 x\r<BR>\n" );
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document.write( "                                 x    =  90/10\r<BR>\n" );
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document.write( "                                  x   = 9\r<BR>\n" );
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document.write( "       therefore number of children   = 9 </SPAN>\n" );
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