SOLUTION: How to change a 50% solution of magnesium sulfate to a 20% solution. Mag sulfate 1G/2ml.

Algebra ->  Customizable Word Problem Solvers  -> Mixtures -> SOLUTION: How to change a 50% solution of magnesium sulfate to a 20% solution. Mag sulfate 1G/2ml.      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 803228: How to change a 50% solution of magnesium sulfate to a 20% solution. Mag sulfate 1G/2ml.
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
In other words, how much solvent to add?
The amount of Mag Sulfate does not change
I will say I have +x+ ml to start with
Let +y+ = ml of solvent to be added
+.5x+%2F+%28+x+%2B+y+%29+=+.2+
+.5x+=+.2%2A%28+x+%2B+y+%29+
+.5x+=+.2x+%2B+.2y+
+.2y+=+.5x+-+.2x+
+.2y+=+.3x+
+y+=+%283%2F2%29%2Ax+
Add 1 and 1/2 times as much solvent as the
ml of total solution you started with