Case 1:
A 6-ounce bottle of salad dressing costs $1.56 .
Answer:
6 ounces = $ 1.56
1 ounce = $ ( 1.56 / 6 ) = $ 0.26
A 1-ounce bottle of salad dressing costs $0.26 .
Case 2:
A 14-ounce bottle of salad dressing costs $3.36 .
Answer:
14 ounces = $ 3.36
1 ounce = $ ( 3.36 / 14 ) = $ 0.24
A 1-ounce bottle of salad dressing costs $0.24 .
Case 3:
A 20-ounce bottle costs $5.60 .
Answer:
20 ounces = $ 5.60
1 ounce = $ ( 5.60 / 20 ) = $ 0.28
A 1-ounce bottle of salad dressing costs $0.28 .
Answer:
A 14-ounce bottle has the lowest cost per ounce.
