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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3 batches of chocolate chip with 2 cups per batch is 6 cups total for the chocolate chip cookies.
Subtract the total needed for the chocolate chip from the total flour used, then divide the remaining amount by number of batches of oatmeal
Cookies.
The problem show 122 total cups, but I don’t think that is right... what is the actual total cups used?
Answer:
Right-angled triangle
Step-by-step explanation:
Answer:
- a) 47.5 million
- b) 65.2 million
- c) 72 million
Step-by-step explanation:
It is convenient to let a spreadsheet or graphing calculator do the repetitive evaluation of a function like this. That simplifies the work and reduces errors.
The function is shown in the attachment written in Horner form, which is convenient for evaluation by hand or using a calculator.
38372. 9..95% of 34,900 is 3472.55. 34,900 + 3472.55 = 38372 thus $38372