Anyone good at accounting? Or math?

fairydust09

Sam’s Ski Boards. com offers 5/4/1 chain discounts to many of its customers. The Ski Hut ordered 20 ski boards with a total list price of $1,200.
What is the net price and trade discount amount?

My answers are not adding up to what's in the book at all!!!
Anyone good at accounting? Or math?
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