document.write( "Question 996497: a radiator contains 16 quarts of fluid that is 15% antifreeze. in order to prepare for the winter joe wants the fluid to be 60% antifreeze. he has a supply of 75% antifreeze solution. how many quarts should he drain and replace with his 75% antifreeze to get his desired mixture \n" ); document.write( "
Algebra.Com's Answer #614917 by addingup(3677)![]() ![]() You can put this solution on YOUR website! .75*16+.15x-(.75*16)=.60 \n" ); document.write( "12+.15x-12= .6 \n" ); document.write( "x= 4 \n" ); document.write( "He needs 4 quarts at .15 and 12 quarts at .75 to obtain a .60 (60%) mix. \n" ); document.write( "Proof: \n" ); document.write( "4/16= .25 25% of the 16 quarts will be at a concentration of 15% \n" ); document.write( "12/16= .75 75% of the 16 quarts will be at a concentration of 75% \n" ); document.write( ".25*.15= .0375 \n" ); document.write( ".75*.75= .5625 \n" ); document.write( "---------------- \n" ); document.write( "Total......0.6 or 60% We have the correct answer \n" ); document.write( " |