Data:
Strawberry juice: s
6L 20%s
xL 80%
Final: (6+x)L 55%
[tex]6\cdot\frac{20}{100}+x\cdot\frac{80}{100}=(6+x)(\frac{55}{100})[/tex]Solve x:
Simplify:
[tex]1.2+0.8x=3.3+0.55x[/tex]Leave in one side of the equation the terms with the variable x:
[tex]0.8x-0.55x=3.3-1.2[/tex]Make substractions.
[tex]0.25x=2.1[/tex]Divide both both sides of the equation into 0.25:
[tex]\begin{gathered} \frac{0.25}{0.25}x=\frac{2.1}{0.25} \\ \\ x=8.4 \end{gathered}[/tex]Then, you shloud add 8.4L of 80 percent strawberry juice to make 55 percent strawberry juice