document.write( "Question 471165: In a school having 990 students 12 out of 27 are girls. How many boy students are there \n" ); document.write( "
Algebra.Com's Answer #323173 by algebrahouse.com(1659) You can put this solution on YOUR website! If 12 out of 27 are girls, \n" ); document.write( "then 15 out of 27 are boys. \n" ); document.write( "There are 990 total.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "15 boys / 27 total = x boys / 990 total {set up a proportion} \n" ); document.write( "27x = 15(990) {cross-multiplied} \n" ); document.write( "27x = 14,850 {multiplied 15 by 990} \n" ); document.write( "x = 550\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "there are 550 boys \n" ); document.write( " For more help from me, visit: www.algebrahouse.com \n" ); document.write( " \n" ); document.write( " |