document.write( "Question 1072861: technician needs to make a 48 liter batch of 40% acid solution. How can the technician combine a batch of an acid solution that is pure acid with another that is 20% to get the desired concentration? \n" ); document.write( "

Algebra.Com's Answer #687763 by ikleyn(52790) $\"\"$ $\"About$

You can put this solution on YOUR website!
.
\n" ); document.write( "

\r\n" );
document.write( " = \r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "x, volume of the 20% aid solution;\r\n" );
document.write( "48-x, volume of the pure acid. \r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "--->  0.2x + 48 - x = 0.4*48,\r\n" );
document.write( "\r\n" );
document.write( "-0.8x + 48 = 19.2,\r\n" );
document.write( "\r\n" );
document.write( "-0.8x = 19.2 - 48,\r\n" );
document.write( "\r\n" );
document.write( "-0.8x = -28.8,\r\n" );
document.write( "\r\n" );
document.write( "x =  = 36.\r\n" );
document.write( "\r\n" );
document.write( "Answer.  36 L of the 20% solution must be mixed with 12 L of pure axid.\r\n" );
document.write( "

\r
\n" ); document.write( "\n" ); document.write( "The solution by \"josgarithmetic\" is $\"highlight%28wrong%29\"$ .\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "There is entire bunch of lessons covering various types of mixture problems\r
\n" ); document.write( "\n" ); document.write( "    - Mixture problems\r
\n" ); document.write( "\n" ); document.write( "    - More Mixture problems\r
\n" ); document.write( "\n" ); document.write( "    - Solving typical word problems on mixtures for solutions \r
\n" ); document.write( "\n" ); document.write( "    - Word problems on mixtures for antifreeze solutions \r
\n" ); document.write( "\n" ); document.write( "    - Word problems on mixtures for alloys \r
\n" ); document.write( "\n" ); document.write( "    - Typical word problems on mixtures from the archive\r
\n" ); document.write( "\n" ); document.write( "in this site.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Read them and become an expert in solution the mixture word problems.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Also, you have this free of charge online textbook in ALGEBRA-I in this site\r
\n" ); document.write( "\n" ); document.write( "    - ALGEBRA-I - YOUR ONLINE TEXTBOOK.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "The referred lessons are the part of this online textbook under the topic \"Mixture problems\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

\n" );