Thirty​ Liters of a 40% Acid Solution Is Obtained by Mixing

question 23

Multiple Choice

Thirty​ liters of a 40% acid solution is obtained by mixing a 28% solution with a 43% solution.How much of each solution is required to obtain the specified concentration of the final mixture? Use this system of linear equations there x and y represents the amounts of the 28% solution and 43% solution. ​​ $$\left\{ \begin{array} { l } x + y = 30 \\0.28 x + 0.43 y = 12\end{array} \right.$$ ​

• A)​28% solution: 6 L;43% solution: 24 L
• B)43% solution: 6 L;28% solution: 24 L​
• C)​28% solution: 40 L;43% solution: 24 L
• D)​43% solution: 40 L;28% solution: 24 L
• E)​43% solution: 7 L;28% solution: 24 L

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Definitions:

Physical Movement

Any bodily action or activity that involves the shifting of parts or the whole body from one position to another.

Illusion

A misleading or misinterpreted perception, causing a discrepancy between how something appears and reality.

Texture Gradient

A perceptual cue that refers to the gradual decrease in detail that occurs in surfaces as they recede from the observer, aiding in depth perception.

Binocular Disparity

The difference in the images on the left and right retinas, which is the basis for depth perception and three-dimensional vision.