By <em>weighted</em> average, we need 75 liters of 24 % iodine solution and 25 liters of 40 % iodine solution to obtain 100 liters of 28 % iodine solution.
<h3>How to determine the volume associated with a given concentration</h3>
Physically speaking, concentration is equal to the amount of solute divided by the volume of solution. We have two solutions with same solute and different concentration and can find the right proportion between the 24 % solution and the 40 % solution by concept of <em>weighted</em> average:
x · 24 + (1 - x) · 40 = 28
40 - 16 · x = 28
16 · x = 40 - 28
16 · x = 12
x = 3/4
By <em>weighted</em> average, we need 75 liters of 24 % iodine solution and 25 liters of 40 % iodine solution to obtain 100 liters of 28 % iodine solution.
To learn more on weighted average: brainly.com/question/18554478
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Answer: 12.5%
Step-by-step explanation:
2=x•16
x= 0.125
Turn it into a decimal
X= 12.5%
Answer:
The unit rate is $3.77
Step-by-step explanation:
You take 30.16 and divide that by 8 which equals 3.77
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