Statement 1 : Gail bought a $45 sweater at 1/3 off.
Discount in Sweater Purchase:

Statement 2: Gail can use her 12% employee discount once a week and used her discount on the suit priced at $140.
Discount in Suit Purchase:

Conclusion:
Discount in Suit Purchase ($16.8) is greater than Discount in Sweater Purchase ($15)