document.write( "Question 1109318: A pharmacist wishes to mix a solution that is 5% Minoxidil. She has on hand 90 ml of a 2% solution and wishes to add some 7% solution to obtain the desired 5% solution. How much 7% solution should she add? \n" ); document.write( "

Algebra.Com's Answer #724304 by ikleyn(52792) $\"\"$ $\"About$

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\n" ); document.write( "A pharmacist wishes to $\"highlight%28cross%28mix%29%29\"$ get a solution that is 5% Minoxidil.
\n" ); document.write( "She has on hand 90 ml of a 2% solution and wishes to add some 7% solution to obtain the desired 5% solution.
\n" ); document.write( "How much 7% solution should she add?
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document.write( "pure Minoxidil amt + pure Minoxidil amt = pure Minoxidil amt\r\n" );
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document.write( "0.02*90            + 0.07*x             = 0.05*(90+x)\r\n" );
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document.write( "0.02*90 + 0.07x = 0.05*90 + 0.05*x\r\n" );
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document.write( "0.07x - 0.05x = 0.05*90 - 0.02*90\r\n" );
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document.write( "0.02x = 0.05*90 - 0.02*90 = 2.7  ====>  x =  = 135.\r\n" );
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document.write( "Answer.  135 mL of the 7% solution to mix.\r\n" );
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document.write( "Check.   0.02*135 + 0.07*90 = 11.25 mL of the pure minoxidil.\r\n" );
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document.write( "         0.05*(90+135) = 11.25 of the pure minoxidil.   ! Correct !\r\n" );
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\n" ); document.write( "\n" ); document.write( "Solved.\r
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\n" ); document.write( "\n" ); document.write( "---------------
\n" ); document.write( "There is entire bunch of introductory lessons covering various types of mixture problems\r
\n" ); document.write( "\n" ); document.write( "    - Mixture problems\r
\n" ); document.write( "\n" ); document.write( "    - More Mixture problems\r
\n" ); document.write( "\n" ); document.write( "    - Solving typical word problems on mixtures for solutions \r
\n" ); document.write( "\n" ); document.write( "    - Word problems on mixtures for antifreeze solutions \r
\n" ); document.write( "\n" ); document.write( "    - Word problems on mixtures for alloys \r
\n" ); document.write( "\n" ); document.write( "    - Typical word problems on mixtures from the archive\r
\n" ); document.write( "\n" ); document.write( "    - Advanced mixture problems \r
\n" ); document.write( "\n" ); document.write( "    - Advanced mixture problem for three alloys \r
\n" ); document.write( "\n" ); document.write( "in this site.\r
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\n" ); document.write( "\n" ); document.write( "You will find there ALL TYPICAL mixture problems with different methods of solutions,
\n" ); document.write( "explained at different levels of detalization, from very detailed to very short.\r
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\n" ); document.write( "\n" ); document.write( "Read them and become an expert in solution mixture word problems.\r
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\n" ); document.write( "\n" ); document.write( "Also, you have this free of charge online textbook in ALGEBRA-I in this site\r
\n" ); document.write( "\n" ); document.write( "    - ALGEBRA-I - YOUR ONLINE TEXTBOOK.\r
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\n" ); document.write( "\n" ); document.write( "The referred lessons are the part of this textbook in the section \"Word problems\" under the topic \"Mixture problems\".\r
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\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Save the link to this online textbook together with its description\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Free of charge online textbook in ALGEBRA-I
\n" ); document.write( "https://www.algebra.com/algebra/homework/quadratic/lessons/ALGEBRA-I-YOUR-ONLINE-TEXTBOOK.lesson\r
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\n" ); document.write( "\n" ); document.write( "to your archive and use it when it is needed.\r
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