How much salt must be added to 80 pounds of a 5% salt solution to make a 24% salt solution ?

Question

How much salt must be added to 80 pounds of a 5% salt solution to make a 24% salt solution ?

Answer 1

First find how much water and salt are in the original Solution:

since 5% =0.05, there are .05 * 80 lbs = 4.0 lbs of Salt, and 76 lbs water.

 

with 76 lbs water, a 24% solution would have a total of 0.24 * 76lbs = 18.24 lbs of salt.

 

Since there already is 4 lbs of salt in there, you need to add 14.24 lbs of salt

 

Hope that helps! 

Answer 2

I bungled this one!