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.
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Answer:
50
Step-by-step explanation:
25x2=50
hope this helps and is write but seems pretty good
Answer:
1.) x = 50 2.) x = 70
Step-by-step explanation:
These angles are complementary angles meaning the angles add up to 90°. Therefore, we can set up equations to solve for the variables.
1.)
x + 40 = 90
x = 50
2.)
x + 20 = 90
x = 70
300x1.05^3
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<span>Parallelogram area = height × base
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<span>Parallelogram height = area / base
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<span>Parallelogram height =136 / 16
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<span>Parallelogram height = 8.5 meters
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