document.write( "Question 1204986: Patricia's school is selling tickets to the school play. On the first day of ticket sales the school sold 6 children tickets and 5 adults tickets for a total of $130.00 The school collected $284.00 on the second day by selling 12 children tickets and 13 adult tickets. What was the price of each type of ticket? \n" ); document.write( "
Algebra.Com's Answer #841561 by Theo(13342)![]() ![]() You can put this solution on YOUR website! x = price of a child ticket. \n" ); document.write( "y = price of an adult ticket.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "you have two equations that need to be solved simultaneously. \n" ); document.write( "they are: \n" ); document.write( "6x + 5y = 130 \n" ); document.write( "12x + 13y = 284\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "multiply both sides of the first equation by 2 and leave the second equation as is to get: \n" ); document.write( "12x + 10y = 260 \n" ); document.write( "12x + 13y = 284\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "subtract the first equation from the second to get: \n" ); document.write( "3y = 24 \n" ); document.write( "solve for y to get y = 8\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "replace y with 8 in the second equation to get: \n" ); document.write( "12x + 13*8 = 284 \n" ); document.write( "simplify to get: \n" ); document.write( "12x + 104 = 284 \n" ); document.write( "subtract 104 from both sides of the equation to get: \n" ); document.write( "12x = 180 \n" ); document.write( "solve for x to get: \n" ); document.write( "x = 180/12 = 15\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "you have x = 15 and y = 8\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "go back to your original equations to see if they are true when you replace x with 15 and y with 8.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the two original equations are: \n" ); document.write( "6x + 5y = 130 becomes 6*15 + 5*8 = 130 which becomes 90 + 40 = 130 which is true. \n" ); document.write( "12x + 13y = 284 becomes 12*15 + 13*8 = 284 which becomes 180 + 104 = 284 which is also true.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the problem is satisfied when x = 15 and y = 8. \n" ); document.write( "that means the price of a child ticket is 15 and the price of an adult ticket is 8.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "that's your solution. \n" ); document.write( "this appears to be counter-intuitive as you would expect the child ticket to be less than the adult ticket, but that's the way it worked out.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "here's what it looks like on a graph.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " ![]() \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |