a 2 - liter bottle of juice costs $2.80. A box containing six 12-liter bottles sells for $3.90. Which option has a higher cost per liter? What is the cost?

2 liters for $2.80 is definitely higher cost than 72 liters for $3.90.

The cost for the higher-cost option is $2.80 / (2 liters) = $1.40 per liter.

The cost for the other option is $3.90 / (72 liters) ≈ $0.05417 per liter.