document.write( "Question 403306: A chemist needs 130 milliliters of a 31% solution but has only 17% and 43% solutions availble. Find how many millimiters of each that should be mixed to get the desired solution. \n" ); document.write( "
Algebra.Com's Answer #285205 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! A chemist needs 130 milliliters of a 31% solution but has only 17% and 43% solutions availble. Find how many millimiters of each that should be mixed to get the desired solution. \n" ); document.write( "------------------------ \n" ); document.write( "f = amount of 43% \n" ); document.write( "s = amount of 17% \n" ); document.write( "--------------- \n" ); document.write( "f + s = 130 (total solution) \n" ); document.write( "0.43f + 0.17s = 130*0.31 (total of what's in the solution) \n" ); document.write( "------------- \n" ); document.write( "43f + 17s = 4030 \n" ); document.write( "s = 130 - f \n" ); document.write( "------------- \n" ); document.write( "43f + 17(130-f) = 4030 \n" ); document.write( "26f = 1820 \n" ); document.write( "f = 70 ml \n" ); document.write( "s = 60 ml \n" ); document.write( " \n" ); document.write( " |