document.write( "Question 809928: What quantity of 40% acid solution must be mixed with 120 mL of 90% acid solution to produce 70% acid solution? \n" ); document.write( "
Algebra.Com's Answer #487935 by richwmiller(17219)![]() ![]() You can put this solution on YOUR website! .9*120+.4x=.7(120+x) \n" ); document.write( "9*120+.4x=.7*120+.7x \n" ); document.write( ".2*120=.3x \n" ); document.write( "2*120=3x \n" ); document.write( "2*40=x \n" ); document.write( "80 mL=x\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |