SOLUTION: a solution contains 17.0% calcium hydroxide and 11% sodium hydroxide. How much calcium hydroxide and sodium hydroxide must be added to 250 kg of this mixture to produce a new mixtu

Algebra ->  Customizable Word Problem Solvers  -> Mixtures -> SOLUTION: a solution contains 17.0% calcium hydroxide and 11% sodium hydroxide. How much calcium hydroxide and sodium hydroxide must be added to 250 kg of this mixture to produce a new mixtu      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


   



Question 809872: a solution contains 17.0% calcium hydroxide and 11% sodium hydroxide. How much calcium hydroxide and sodium hydroxide must be added to 250 kg of this mixture to produce a new mixture of 19% calcium hydroxide and 19% sodium hydroxide
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
The weight of calcium hydroxide is +.17%2A250+=+42.5+ kg
The weight of sodium hydroxide is +.11%2A250+=+27.5+ kg
-----------------
In the new mixture, the weight of calcium hydroxide is +.19%2A250+=+47.5+ kg
In the new mixture, the weight of sodium hydroxide is +.19%2A250+=+47.5+ kg
-----------------
+47.5+-+42.5+=+5+ kg
+47.5+-+27.5+=+20+ kg
5 kg of calcium hydroxide must be added
20 kg of sodium hydroxide must be added