Math mix-problem?

Question

At least how much water must be evaporated from 32 pounds of 40 % solution salt and water to make the result a solution that is at least 6% salt?

Answer 1

I think you need to add water to make up the 6% salt

Answer 2

Here's the inequality that you are looking for:

.4(32) - 0(x) >= .06(32-x)
32 pound at 40% minus x pounds at 0% (water is 0% salt) is greater than or equal to (at least) 32 pounds minus the x evaporated pounds at 6%

Now you get to solve.

Hope this helps. Good Luck.

Answer 3

properly dividing through a mixed volume is an same challenge as dividing through a fragment. There truly isn't any reason to positioned numbers into mixed numbers. in simple terms replace it again right into a fragment

Answer 4

32*40/100=12.8 salt
12,8/(32-x) <= 6/100
(32-x)/12.8>=100/6
32-x>=1280/6
32-1280/6>=x
x<=(192-1280)/6

x must be less than a negatif number.
This result doesn't happen in daily life.
Answer: x={ }

Answer 5

the question is ambiguous.as the water vaporates the solution will become stronger

Answer 6

set up a proportion and solve