To determine which cup size is a better deal per ounce, we can calculate the price per ounce for both the 12-oz and 20-oz cups of coffee.
For the 12-oz cup:
- Price: $2.70
- Ounces: 12 oz
- Price per ounce = Price / Ounces = $2.70 / 12 oz = $0.225 per ounce.
For the 20-oz cup:
- Price: $4.50
- Ounces: 20 oz
- Price per ounce = Price / Ounces = $4.50 / 20 oz = $0.225 per ounce.
Both cup sizes cost $0.225 per ounce.
Therefore, the correct response is:
Both cup sizes cost the same per ounce.