Question

Which is the better buy? 36-fluid-ounce carton of apple juice for $8.28 6-cup carton of apple juice for $5.76

Answer 1

In this case, what we must do is calculate the price per unit each one:

`\begin{gathered} 1\text{cup}=8ounce \\ (8.28)/(36)=0.23 \\ (5.76)/(6\cdot8)=0.12 \end{gathered}`

therefore, the second purchase is better because it cost $0.12 per ounce, otheriwse the other purchase compares that they are $0.23 per ounce