document.write( "Question 631789: A chemist needs 90 milliliters of a 42% solution but has only 38% and 47% solutions available. Find how many milliliters of each that should be mixed to get the desired solution. \n" ); document.write( "
Algebra.Com's Answer #397801 by richwmiller(17219)\"\" \"About 
You can put this solution on YOUR website!
x+y=90;
\n" ); document.write( ".38x+.47y=.42*90
\n" ); document.write( "x=50 of the 38% y=40 of the 47%
\n" ); document.write( "
\n" );