document.write( "Question 897310: Mixture Problem: A solution has 60% acid in it, and another solution has 90% acid in it. You take 20 liters of 60% solution, how many liters of 90% solution do you need in order to make a solution t \n" ); document.write( "

Algebra.Com's Answer #544074 by josgarithmetic(39617) $\"\"$ $\"About$

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...solution t,
\n" ); document.write( "What?\r
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\n" ); document.write( "\n" ); document.write( "Let v= volume of 90% acid to use.\r
\n" ); document.write( "\n" ); document.write( " $\"%2820%2A60%2Bv%2A90%29%2F%2820%2Bv%29=t\"$
\n" ); document.write( "t would mean, percent acid of the mixture, and you must know what this is. Solving for v is then possible.\r
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\n" ); document.write( "\n" ); document.write( " $\"20%2A60%2B90v=t%28v%2B20%29\"$
\n" ); document.write( " $\"1200%2B90v=t%2Av%2B20t\"$
\n" ); document.write( " $\"90v-tv=20t-1200\"$
\n" ); document.write( " $\"v%2890-t%29=20t-1200\"$
\n" ); document.write( " $\"highlight_green%28v=%2820t-1200%29%2F%2890-t%29%29\"$ \n" ); document.write( "

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