SOLUTION: how much water must be evaporated from 32 ounces of a 4% salt solution to produce a 6% salt solution?

Question 12470: how much water must be evaporated from 32 ounces of a 4% salt solution to produce a 6% salt solution?
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
Let's see, 32 oz of 4% salt solution is 96% water and 6% salt solution is 94% water. Since we are not removing any salt, the question can be rephrased: How much water must be evaporated from 32 oz of 96% water solution to produce a 94% water solution? Change the percentages to decimals. 94% = 0.94, 96% = 0.96, 100% = 1
The equation is now in terms of water rather than salt:

Subtract 30.08 from both sides.
Add x to both sides.
Divide both sides by 0.06

So, 10.67 oz of water must be evaporated. This is one third of the original 32 oz. of solution.

RELATED QUESTIONS
How much water must be evaporated from 32 ounces of a 4% salt solution to make a 6% salt... (answered by ptaylor)

How much water must be evaporated from 32 ounces of a 4% salt solution to make a 6% salt... (answered by ankor@dixie-net.com)

Chemistry: Salt Solution. How much water must be evaporated from 32 ounces of a 4% salt... (answered by Alan3354,oberobic)

How much water must be evaporated from 32 ounces of a 4% salt solution to make a 7% salt... (answered by ptaylor)

how much water must be evaporated from 32 ounces of a 4% salt solution to make a 6% slat... (answered by drk)

How much water must be evaporated from 32 ounces of a 5% salt solution to make a 8% salt... (answered by ptaylor)

How much water must be evaporated from 32 ounces of a 2% salt solution to make a 8% salt... (answered by robertb)

how much water must be evaporated from 32 ounces of a 3% salt solution to make a 8% salt... (answered by josgarithmetic)

how much water must be evaporated from 28 ounces of 6% salt solution to make a 7% salt... (answered by josgarithmetic)