document.write( "Question 1040862: There are 50 boys and 60 girls in the cafeteria .After x boys and x-5 girls left the cafeteria the probability of selecting a girl becomes 5/7,what is the value of x? \n" ); document.write( "
Algebra.Com's Answer #655782 by robertb(5830)![]() ![]() You can put this solution on YOUR website! After x boys left, there are 50 - x boys remaining. \n" ); document.write( "After x-5 girls left, there are 60 - (x-5) = 65 - x girls remaining.\r \n" ); document.write( "\n" ); document.write( "==> \n" ); document.write( "\n" ); document.write( "<==> \n" ); document.write( "\n" ); document.write( "==> 7(65-x) = 5(115-2x), after cross-multiplication.\r \n" ); document.write( "\n" ); document.write( "==> 455 - 7x = 575 - 10x\r \n" ); document.write( "\n" ); document.write( "==> 3x = 120 ==> |