hello
let's simply calculate both and compare
1.
if two ounce cost $0.50, let's divide 0.5 by 2 to know the cost of each ounce
[tex]1\text{ounce}=\frac{0.50}{2}=0.25[/tex]2.
if three ounce cost $0.78, what is the cost of 1 ounce?
let's simply divide 0.78 by 3
[tex]1\text{ounce}=\frac{0.78}{3}=0.26[/tex]the first option is better because $0.25 an ounce is better than $0.26 per ounce