document.write( "Question 951413: rosa combines 2 gallons of 2% milk and 6 gallons of 4% milk. How many gallons of 6% milk must she add to obtain a 5% milk mixture? \n" ); document.write( "

Algebra.Com's Answer #581009 by josgarithmetic(39617) $\"\"$ $\"About$

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First mixture, $\"%282%2A2%2B6%2A4%29%2F%282%2B6%29=28%2F8\"$ , percent. Eight gallons of this.\r
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\n" ); document.write( "\n" ); document.write( "Use that number unreduced here:\r
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\n" ); document.write( "\n" ); document.write( "Next mixture, $\"%28%2828%2F8%29%2A8%2Bv%2A6%29%2F%28v%2B8%29=5\"$ , using v for how much of the 6% fat milk to add.\r
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\n" ); document.write( "\n" ); document.write( " $\"28%2B6v=5%28v%2B8%29\"$
\n" ); document.write( " $\"28%2B6v=5v%2B40\"$
\n" ); document.write( " $\"v=40-28\"$
\n" ); document.write( " $\"highlight%28v=12%29\"$ gallons of the 6% to add. \n" ); document.write( "

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