document.write( "Question 343456: how many quarts of pure antifreeze must be added to 7 quarts of a 10% antifreeze solution to obtain a 30% antifreeze solution \n" ); document.write( "
Algebra.Com's Answer #245779 by scott8148(6628)\"\" \"About 
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(10%)(7) + (100%)(x) = (30%)(7 + x) \n" ); document.write( "
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