document.write( "Question 6561: in class of x students, when 2 more boys and 7 more girls are added, the ratio of boys to girls change from 2/3 to 3/5. what is the value of x? \n" ); document.write( "
Algebra.Com's Answer #3575 by srinivas123(23) ![]() You can put this solution on YOUR website! let the number of boys be x1.number of girls be x2.\r \n" ); document.write( "\n" ); document.write( "x1+x2 = x\r \n" ); document.write( "\n" ); document.write( "Given that x1/x2 = 2/3\r \n" ); document.write( "\n" ); document.write( "====> 3x1-2x2=0 ----->equation (1)\r \n" ); document.write( "\n" ); document.write( "after adding \r \n" ); document.write( "\n" ); document.write( "x1+2/x2+7 = 3/5\r \n" ); document.write( "\n" ); document.write( "====> 5x1-3x2=11 ----->equation (2)\r \n" ); document.write( "\n" ); document.write( "sloving 1 and 2 ,\r \n" ); document.write( "\n" ); document.write( "we get x1,x2 as 22,33 respectivly.\r \n" ); document.write( "\n" ); document.write( "So the total is 55 students. \n" ); document.write( " \n" ); document.write( " |