Answer:
Apples is the lowest
Explanation:
Price per pound is the number of dollars divided by the number of pounds:
- Keller's: $6.25/(5 lb) = $1.25/lb
- Prum's: $3.90/(3 lb) = $1.30/lb
- Apples: $7.20/(6 lb) = $1.20/lb
The "Apples" stand is offering the lowest price per pound at $1.20 per pound.