document.write( "Question 1047306: Problem Page
\n" );
document.write( "In the lab, Heather has two solutions that contain alcohol and is mixing them with each other. She uses
\n" );
document.write( "500
\n" );
document.write( " milliliters less of Solution A than Solution B. Solution A is
\n" );
document.write( "17%
\n" );
document.write( " alcohol and Solution B is
\n" );
document.write( "11%
\n" );
document.write( " alcohol. How many milliliters of Solution A does she use, if the resulting mixture has
\n" );
document.write( "167
\n" );
document.write( " milliliters of pure alcohol?
\n" );
document.write( " \n" );
document.write( "
Algebra.Com's Answer #662837 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! In the lab, Heather has two solutions that contain alcohol and is mixing them with each other. \n" ); document.write( "She uses 500 milliliters less of Solution A than Solution B. \n" ); document.write( " Solution A is 17% alcohol and \n" ); document.write( " Solution B is 11% alcohol. \n" ); document.write( " How many milliliters of Solution A does she use, if the resulting mixture has \n" ); document.write( "167 milliliters of pure alcohol? \n" ); document.write( ": \n" ); document.write( "a = amt of A solution \n" ); document.write( "b = amt of B solution \n" ); document.write( "\"500 milliliters less of Solution A than Solution B.\" \n" ); document.write( "a = b - 500 \n" ); document.write( ": \n" ); document.write( "A mixture equation \n" ); document.write( ".17a + .11b = 167 \n" ); document.write( "Replace a with (b-500) \n" ); document.write( ".17(b-500) + .11b = 167 \n" ); document.write( ".17b - 85 + .11b = 167 \n" ); document.write( ".17b + .11b = 167 + 85 \n" ); document.write( ".28b = 252 \n" ); document.write( "b = 252/,28 \n" ); document.write( "b = 900 ml of B solution used \n" ); document.write( "therefore \n" ); document.write( "900 - 500 = 400 ml of A solution \n" ); document.write( ": \n" ); document.write( "; \n" ); document.write( "Check by finding the actual amt of alcohol in each \n" ); document.write( ".17(400) = 68 ml \n" ); document.write( ".11(900) = 99 \n" ); document.write( "------------------------ \n" ); document.write( "total alcohol: 167 mo \n" ); document.write( " \n" ); document.write( " |