Final answer:
The customer would save $40.00 if she purchased an item originally priced $200 during the 20% off promotion.
Step-by-step explanation:
To calculate the amount saved with a 20% off promotion, you need to find 20% of the original price. To do this, multiply the original price ($200) by 20% (0.20).
The amount saved would be $40.00. This means the customer would save $40.00 if she purchased an item originally priced $200 during the 20% off promotion.
Learn more about Calculating savings with a percentage off promotion