document.write( "Question 1113359: How many gallons of a 20% antifreeze solution and how many gallons of a 50% anitfreeze solution should be mixed to get 30 gallons of a 40% antifreeze solution? \n" ); document.write( "
Algebra.Com's Answer #728373 by mananth(16946)\"\" \"About 
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component percent ---------------- quantity
\n" ); document.write( "Antifreeze I 0.2 ---------------- x ml
\n" ); document.write( "Antifreeze II 0.5 ---------------- 30 - x ml
\n" ); document.write( "Mixture 0.40 ---------------- 30
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\n" ); document.write( "0.2 x + 0.5 ( 30 - x ) = 30.00 * 0.40
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\n" ); document.write( "0.2 x + 15 - 0.5 x = 12.00
\n" ); document.write( "0.2 x - 0.5 x = 12 - 15
\n" ); document.write( "-0.3 x = -3
\n" ); document.write( "/ -0.3
\n" ); document.write( " x = 10 gal\r
\n" ); document.write( "\n" ); document.write( "20.00% Antifreeze I 10 gal
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\n" ); document.write( "50.00% Antifreeze II 20 gal
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