document.write( "Question 1105654: Two numbers are in the ratio of 5:8 their difference is 45. What is the smaller number? \n" ); document.write( "
Algebra.Com's Answer #720519 by Theo(13342)![]() ![]() You can put this solution on YOUR website! x is the first number. \n" ); document.write( "y is the second number.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x/y = 5/8 \n" ); document.write( "x = 5/8 * y\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "y - x = 45 (because y is bigger than x, the difference will be positive).\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "since x = 5/8 * y , then y - x = 45 becomes y - 5/8 * y = 45 which becomes (8-5)/8 * y = 45 which becomes 3/8 * y = 45\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "multiply both sides of this equation by 8/3 to get y = 45 * 8/3 which results in y = 15 * 8 which results in y = 120.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "when y = 120, x = 5/8 * y becomes x = 5/8 * 120 which becomes x = 5 * 15 which results in x = 75.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "you have x = 75 and y = 120.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x/y = 75/120 which becomes x/y = 15/24 which becomes x/y = 5/8.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "you get x/y = 5/8 which can be written as x:y = 5:8 which is what you were given to start with.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "y - x = 120 - 75 = 45 which is also what you were given to start with.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the solution is confirmed to be good.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "y is the biggest number. \n" ); document.write( "x is the smallest number.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the solution is that the smallest number is 75.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |