Solution

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

Result

x =  30 dl
y =  217 dl

Solution:

x+y=247 84469⋅x+52102⋅y=116  x=30 dlx+y=247 \ \\ \dfrac{ 84}{ 469} \cdot x + \dfrac{ 52}{ 102} \cdot y = 116 \ \\ \ \\ x = 30 \ \text{dl}
y=217 dly = 217 \ \text{dl}

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