document.write( "Question 1189924: A chemical company makes two brands of antifreeze. The first brand is 55% pure antifreeze, and the second brand is 85% pure antifreeze. In order to obtain 180 gallons of a mixture that contains 75% pure antifreeze, how many gallons of each brand of antifreeze must be used? \n" ); document.write( "
Algebra.Com's Answer #821435 by josgarithmetic(39617)\"\" \"About 
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v of the 85%
\n" ); document.write( "180-v of the 55%\r
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\n" ); document.write( "\n" ); document.write( "\"highlight_green%2885v%2B55%28180-v%29=75%2A180%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"85v-55v%2B55%2A180=75%2A180\"\r
\n" ); document.write( "\n" ); document.write( "\"%2885-55%29v=75%2A180-55%2A180\"\r
\n" ); document.write( "\n" ); document.write( "\"highlight_green%28v=180%28%2875-55%29%2F%2885-55%29%29%29\"----------simplify or reduce this.\r
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\n" ); document.write( "\n" ); document.write( "\"v=180%2820%2F30%29\"\r
\n" ); document.write( "\n" ); document.write( "\"v=180%282%2F3%29\"----------this is mostly simplified.\r
\n" ); document.write( "\n" ); document.write( "\"highlight%28v=120%29\"-------amount of the 85% antifreeze to use.
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