Answer:
Jamil's gum were the cheapest ($.20).
Explanation:
Kendra's Ratio: $1.20/4
- Kendra's cost per gum is $.30
Taliyah's Ratio: $6.60/20
- Taliyah's cost per gum is $.33
Jamil's Ratio: $1/5
- Jamil's cost per gum is $.20
Fredrick's Ratio: $.25/1
- Fredrick's cost per gum is $.25