document.write( "Question 100008: How much of a liquid with a 30% alchohol content and how much of a liquid with a 100% alcohol content should be added to end up with 42 milliiters of with a 50% alcohol content? \n" ); document.write( "
Algebra.Com's Answer #72826 by Nate(3500) ![]() You can put this solution on YOUR website! [ 100%(x) + 30%(42 - x) ]/[42] = 50% \n" ); document.write( "[ x + 0.3(42 - x) ]/42 = 0.5 \n" ); document.write( "[ x + 12.6 - 0.3x ]/42 = 0.5 \n" ); document.write( "[ 0.7x + 12.6 ]/42 = 0.5 \n" ); document.write( "0.7x + 12.6 = 21 \n" ); document.write( "0.7x = 8.4 \n" ); document.write( "x = 12 \n" ); document.write( "42 - x = 30 \n" ); document.write( "12mL of 100% and 30mL of 30% \n" ); document.write( " |