document.write( "Question 986227: can you show me how to do this step by step so i can use this as notes for future homework.\r
\n" ); document.write( "\n" ); document.write( "Dmitri needs 7 liters of a 24% solution of sulfuric acid for a research project in molecular biology. He has two supplies of sulfuric acid solution: one is an unlimited supply of the 21% solution and the other an unlimited supply of the 28% solution. How many liters of each solution should Dmitri use?
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Algebra.Com's Answer #607023 by josgarithmetic(39617)\"\" \"About 
You can put this solution on YOUR website!
Check these two lessons:\r
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\n" ); document.write( "\n" ); document.write( "http://www.algebra.com/my/Mixtures%3A-All-in-Symbols.lesson?content_action=show_dev\r
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\n" ); document.write( "\n" ); document.write( "This example maybe easier but the same idea,
\n" ); document.write( "video example, two-part mixture, using just ONE variable
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