Final answer:
The second store offers a better deal for the juice at $1.80 per liter compared to the first store's $1.90 per liter. This was determined by calculating the price per liter for juice from both stores and comparing them.
Step-by-step explanation:
To determine which store offers the better deal for the juice, we need to calculate the price per liter at each store and then compare them. For the first store, the price per liter can be found by dividing the total price by the total volume: $3.80 divided by 2 liters which equals $1.90 per liter. For the second store, the price per liter is $2.70 divided by 1.5 liters which equals $1.80 per liter.
Now that we have both prices per liter, we can compare them: The first store's price per liter is $1.90, and the second store's price per liter is $1.80. Therefore, the second store offers the better deal for the juice because it has a lower price per liter.
To assist students further with understanding, consider this similar example involving yogurt purchases. Leslie must compare two options: a 2 pound container for $6, or five 6-ounce containers totaling 30 ounces for the same price. By converting ounces to pounds (16 ounces in a pound), Leslie finds that 30 ounces is equivalent to 1.875 pounds. Thus, the 2 pound container gives her more yogurt, offering a better deal compared to the total of five 6-ounce containers.