document.write( "Question 280927: How many gallons of 20% saline solution should be mixed with 12 gallons of pure water to make a 15% saline? \n" ); document.write( "
Algebra.Com's Answer #204140 by checkley77(12844)![]() ![]() ![]() You can put this solution on YOUR website! .20x=.15(12+x) \n" ); document.write( ".20x=1.8+.15x \n" ); document.write( ",20x-.15x=1.8 \n" ); document.write( ".05x=1.8 \n" ); document.write( "x=1/8/.05 \n" ); document.write( "x=36 gallons of saline solution is needed. \n" ); document.write( "Proof: \n" ); document.write( ".20*36=.15(12+36) \n" ); document.write( "7.2=.15*48 \n" ); document.write( "7.2=7.2 \n" ); document.write( " |