Solution

In 469 dl, the red solution is 84 dl in red color, and in 102 dl, the blue solution is 52 dl in blue color. How many dl of red and blue dl color solution must be mixed to get a mixture of 247 dl to contain 116 dl of color?

Correct answer:

x =  30 dl
y =  217 dl

Step-by-step explanation:

$$\begin{gathered} x+y=247 \\ \frac{84}{469}\cdot x+\frac{52}{102}\cdot y=116 \\ x=30\text{dl} \end{gathered}$$

$y=217\text{dl}$

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