document.write( "Question 21285: Three out of 5 people attending Dustin's party were girls. If 12 girls attended, how many people were at the party? \n" ); document.write( "
Algebra.Com's Answer #10231 by wuwei96815(245)![]() ![]() ![]() You can put this solution on YOUR website! Well, we don't know how many people attended so let's call that number x the unknown.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Now, we have to write an equation with x in it so that we can solve the equation and find out what x is.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "3 out of 5 people attending or 3/5 of x were 12 girls. \n" ); document.write( "Another way of saying the same thing is 3/5 x = 12. \n" ); document.write( "Let's solve 3/5x=12. \n" ); document.write( "Multiply both sides of the equation by 5/3 in order to isolate x. \n" ); document.write( "5/3 times 3/5x = 5/3 times 12. \n" ); document.write( "We get: x = 20.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Did you understand all of that? \n" ); document.write( " |