Cost of a bag of chips is $ 2.49.
The number of juice bottles is 12
The total cost is $ 27.57.
Let x be the cost of a juice bottle. Therefore we have,
[tex]2.49+12x=27.57[/tex]On solving, x can be calculated as,
[tex]\begin{gathered} 12x=27.57-2.49 \\ 12x=25.08 \\ x=\frac{25.08}{12}=2.09 \end{gathered}[/tex]Thus, the cost of each juice bottle is $2.09.