SOLUTION: How many ml of a 34% saline solution must be mixed with pure water to make 17 ml of a 12% saline solution?

Algebra ->  Customizable Word Problem Solvers  -> Mixtures -> SOLUTION: How many ml of a 34% saline solution must be mixed with pure water to make 17 ml of a 12% saline solution?       Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 661946: How many ml of a 34% saline solution must be mixed with pure water to make
17 ml of a 12% saline solution?

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +w+ = ml of water to be used
Let +x+ = ml of 34% saline solution to be used
+.34x+ = salt in 34% solution
---------------------------
(1) +.34x+%2F+17+=+.12+
(2) +x+%2B+w+=+17+
-----------------
(1) +.34x+=+.12%2A17+
(1) +.34x+=+2.04+
(1) +x+=+6+
and
(2) +6+%2B+w+=+17+
(2) +w+=+11+
---------------
6 ml of 34% solution is needed