Calculating Total After Discount Promotion

A company is running a promotion where customers can save on their total purchase based on specific thresholds. Under this promotion, if a customer spends more than $300, they receive a 20% discount on the total amount. If they spend between $200 and $300, they receive a 10% discount.

Maria wants to buy a set of electronics totaling $550. After applying the discount, how much will she spend?