By Andrew Egger
Size #1: 3.79 Liters $9.42
Size #1: Unit Price $9.42/3.79L = $2.49 per liter
Size #2: 1.42 Liters $4.98
Size 2:Unit Price $4.98/1.42L= $3.51 per liter
Size #3: Liters $2.68
Size 3#:Unit Price $2.68/.443L = $6.05 per liter
Conclusion I have found size one, 3.79 L, to be the least amount per liter. I divided the price by the liters and got the price per liter. I then compared the unit prices. Size 1:$2.49 per liter Size 2:$3.51 per liter Size 3:$6.05 per liter