Answer:
$.02 per ounce
Step-by-step explanation:
To find the cost per ounce, we take the cost and divide by the ounces
Brand A
$1.28 / 8
$.16 per ounce
Brand B
$1.68/12
$.14 per ounce
To find the difference, we subtract the smaller from the larger
$.16 -$.14
$.02 per ounce