document.write( "Question 1093271: lauren earns the same amount for mowing four of the neighbours lawns every month. each month she saves all her pay except $30, which she spends on her mobile phone. if she has $600 at the end of the year, how much did she earn each month? \n" ); document.write( "
Algebra.Com's Answer #707890 by Theo(13342) You can put this solution on YOUR website! x equals what she earns each month. \n" ); document.write( "x - 30 is what she keeps each month.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "at the end of the year, she has 600.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "12 * (x-30) = 600\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x - 30 = 600 / 12 = 50.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "add 30 to both sides to get x = 80.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "she earns 80 dollars each month.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "she saves 50 and spends 30.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "at the end of the year she has saved 12 * 50 = 600 and she has spent 12 * 30 = 360.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "her total revenue for the year was 12 * 80 = 960.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "600 was saved. \n" ); document.write( "360 was spent on the mobile phone.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "you could also have done:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "600 / 12 = 50 dollars she saves every month.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "add 30 that she spent on the mobile phone and she earned 80 dollars each month.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "comes out to be the same thing but without the algebraic notation. \n" ); document.write( " \n" ); document.write( " |