document.write( "Question 263158: A chemist wants to make a 10% solution of fertilizer. How much water and how much of 30% solution should the chemist mix to get 30 L of a 10% solution? \n" ); document.write( "

Algebra.Com's Answer #193923 by oberobic(2304) $\"\"$ $\"About$

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In solving solution problems, you always want to determine how much \"pure stuff\" you'll need.
\n" ); document.write( "You're told you need 30 L of 10% solution, so that means 3 L of pure fertilizer + 27 L of water.
\n" ); document.write( "You're told you have some 30% solution.
\n" ); document.write( "So the amount of pure stuff we need will be:
\n" ); document.write( ".3x = 3
\n" ); document.write( "x = 10
\n" ); document.write( "So, 10 L of the 30% solution will contain 3 L of fertilizer.
\n" ); document.write( "But you need 30 L in total, so add 20 L of water.
\n" ); document.write( "Then you'll have 30 L that contains 3 L of fertilizer, which is the desired 10% solution.
\n" ); document.write( "Done. \n" ); document.write( "

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