We need to find the cost per liter for Coca and Pepsi and compare both solutions in order to answer the question.
In the first case (coca case), we have
[tex]\begin{gathered} 1.29\text{ dollars ----- 1.25 liters} \\ x\text{ ----------- 1 liter} \end{gathered}[/tex]then, we have
[tex]\begin{gathered} x=\frac{(1.29)(1)}{1.25} \\ x=\frac{1.29}{1.25} \\ x=1.032 \end{gathered}[/tex]By rounding down, 1 liter of coca cost $1.03.
In the secon case (pepesi case), we have
[tex]\begin{gathered} 2.49\text{ dollars ------ 2 liters} \\ x\text{ ------------- 1liter} \end{gathered}[/tex]hence, x is equal to
[tex]\begin{gathered} x=\frac{(2.49)(1)}{2} \\ x=\frac{2.49}{2} \\ x=1.245 \end{gathered}[/tex]By rounding down, 1 liter of pepsi cost $1.25.
By comparing both solutions, we can see that Coca has a better price because $1.03 is less than $1.25.
