document.write( "Question 156804: A chemist has two acid solutions.One contains 15 percent acid and the other contains 6 percent acid. How many cubic meters of each solution should be used to obtain 400 cm^3 of a solution that is 9 percent acid? \n" ); document.write( "
Algebra.Com's Answer #115618 by scott8148(6628)![]() ![]() You can put this solution on YOUR website! let x=cm^3 of 15%, so 400-x=cm^3 of 6%\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "(15%)(x)+(6%)(400-x)=(9%)(400) __ multiply by 100 to clear percentages\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "15x+2400-6x=3600 __ subtracting 2400 __ 9x=1200 dividing by 9 __ x=400/3\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "substituting __ 400-(400/3)=800/3 \n" ); document.write( " |