document.write( "Question 1101700: 1000 people at concert. X were adults and y were kids. Adults cost 10 Euro and kids cost 5 Euro. Total amount 8750 Euro. How many were kids and how many were adults \n" ); document.write( "
Algebra.Com's Answer #716398 by richwmiller(17219) You can put this solution on YOUR website! \"tutor\" Shin123 \n" ); document.write( "From the owner and webmaster: \n" ); document.write( "It is an absolute REQUIREMENT that you MUST SHOW ALL WORK. Showing work is the best way to demonstrate your competence. Solutions without sufficient work shown are worthless.\r \n" ); document.write( "\n" ); document.write( "My take on the alligation method. \n" ); document.write( "8750 euro = 1000 tickets at 8.75 euro each \n" ); document.write( "Let A denote the 10 Euro tickets and B denote the 5 Euro tickets which we have. \n" ); document.write( "Let C denote the 8.75 Euro which we want. \n" ); document.write( "Using the method of alligation. \n" ); document.write( " \r\n" ); document.write( "10 3.75 3.75/5.0*1000=750 adults at 10 Euro \r\n" ); document.write( " 8.75 750+250= 1000 tickets of 8.75 Euro\r\n" ); document.write( "5 1.25 1.25/5.0*1000=250 Kids at 5 Euro \r\n" ); document.write( " 5.0\r\n" ); document.write( " \n" ); document.write( "1.25= 10 - 8.75 \n" ); document.write( "3.75= 8.75 - 5 \n" ); document.write( "E.g. There are 3.75 parts of A plus 1.25 parts of B \n" ); document.write( "Then 3.75+1.25=5.0 parts total \n" ); document.write( "3.75/5.0=0.75 \n" ); document.write( "0.75*1000=750 \n" ); document.write( "750 adult at 10 euro \n" ); document.write( "1000 tickets-750 adult=250 kids \n" ); document.write( "250.0 kids of 5 euro \n" ); document.write( "or \n" ); document.write( "1.25/5.0=0.25 \n" ); document.write( "0.25*1000=250 Euro \n" ); document.write( "250.0 kids at 5 euro. \n" ); document.write( "check \n" ); document.write( "0.05 * 250 + 0.1 * 750 = 0.0875*1000 \n" ); document.write( "12.5 + 75.0 = 87.5 \n" ); document.write( "87.5 = 87.5 \n" ); document.write( "ok \n" ); document.write( "Thank you greenestampes for introducing me to alligation. \n" ); document.write( " |