document.write( "Question 916510: The ratio of male to female employees in an office is 3:7. When 8 additional female employees are hired the ratio becomes 3:9. How many male employees does the office have? \n" ); document.write( "
Algebra.Com's Answer #556092 by Theo(13342)![]() ![]() You can put this solution on YOUR website! m/f = 3/7 \n" ); document.write( "m/(f+8) = 3/9\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "cross m/f = 3/7 to get: \n" ); document.write( "7m = 3f \n" ); document.write( "divide both sides of this equation by 3 to get: \n" ); document.write( "7m/3 = f which is the same as f = 7m/3\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "cross multiply m/(f+8) = 3/9 to get: \n" ); document.write( "3*(f+8) = 9m \n" ); document.write( "simplify to get: \n" ); document.write( "3f+24 = 9m\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "replace f with 7m/3 in 3f+24 = 9m to get: \n" ); document.write( "3(7m/3) + 24 = 9m \n" ); document.write( "simplify to get: \n" ); document.write( "7m + 24 = 9m \n" ); document.write( "subtract 7m from both sides of the equation to get: \n" ); document.write( "24 = 2m \n" ); document.write( "divide both sides of the equation by 2 to get: \n" ); document.write( "12 = m which is the same as m = 12\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "in the equation m/f = 3/7, replace m with 12 to get: \n" ); document.write( "12/f = 3/7 \n" ); document.write( "cross multiply to get 84 = 3f \n" ); document.write( "divide both sides of the equation by 3 to get: \n" ); document.write( "28=f which is the same as f = 28\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "you have m = 12 and f = 28 \n" ); document.write( "m/f = 3/7 becomes 12/28 = 3/7 which becomes 3/7 = 3/7 which confirms m = 12 and f = 28 is a good solution.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "m/(f+8) = 3/9 becomes 12/(28+8) = 3/9 which becomes 12/36 = 3/9 which becomes 3/9 = 3/9 which also confirms m = 12 and f = 28 is a good solution.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "your solution is m = 12 and f = 28.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |