SOLUTION: Katy needs to mix a 20% saline solution with a 50% saline solution to create 100 millileters of a 44% solution. How many millileters of each solution must Katy use?

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Katy needs to mix a 20% saline solution with a 50% saline solution to create 100 millileters of a 44% solution. How many millileters of each solution must Katy use?       Log On


   

Question 417141: Katy needs to mix a 20% saline solution with a 50% saline solution to create 100 millileters of a 44% solution. How many millileters of each solution must Katy use?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi

creating 100 millileters of a 44% solution

Let x and (100ml -x) represent the amount of 50% and 20% solution respectively

Question states*** Mixing...

 .50x + .20(100-x) = .44*100ml

Solving for x

      .30x = 24

         x = 80ml , the amount of the 50% solution. 20ml of 20% solution (100-80) 



CHECKING our Answer***

.50*80ml + .20*20ml =  40ml + 4ml = 44ml =.44*100ml