Answer:
Three 6-packs of Diet Coke
Explanation:
If the 12-pack of Diet Coke is $5.00, each diet coke is about $0.42.
In total, three 6-packs of Diet Coke contain 18 diet cokes. This would mean each diet coke costs about $0.41.
The three 6-packs of diet coke are the better bargain.