document.write( "Question 643942: you need 25 ml 2% salt solution and you have 100 ml 5% salt solution. how much stock solution do you need? how much water? \n" ); document.write( "

Algebra.Com's Answer #404720 by lwsshak3(11628) $\"\"$ $\"About$

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you need 25 ml 2% salt solution and you have 100 ml 5% salt solution. how much stock solution do you need? how much water?
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\n" ); document.write( "let x=amt of 5% stock solution needed
\n" ); document.write( "25-x=water needed
\n" ); document.write( "5%x=2%*25
\n" ); document.write( "x=(2/5)*25=10
\n" ); document.write( "25-x=15
\n" ); document.write( "amt of 5% stock solution needed=10 ml
\n" ); document.write( "water needed=15 ml \n" ); document.write( "

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