Which would be the better buy, a gallon of milk for $3.25 or a 3-liter container of milk for $3?
Explain your reasoning.
To determine which option is the better buy, we need to compare the prices of the two options and calculate the cost per unit volume.
First, let's calculate the cost per unit volume for the gallon of milk. We know that a gallon is equivalent to approximately 3.785 liters, so the cost per liter for the gallon of milk would be $3.25 divided by 3.785, which is approximately $0.86 per liter.
Next, let's calculate the cost per unit volume for the 3-liter container of milk. Since the price is $3 for 3 liters, the cost per liter for the 3-liter container would be $3 divided by 3, which is $1 per liter.
Now, we can compare the cost per liter for both options. The gallon of milk costs $0.86 per liter, while the 3-liter container costs $1 per liter.
Based on these calculations, the gallon of milk for $3.25 is the better buy because it has a lower cost per unit volume ($0.86 per liter) compared to the 3-liter container ($1 per liter).
Isn't 1 US gallon = 3.97 litres?
so find the unit price of each.