Return to question 4 A manufacturer of skateboards offered a 7/4/3 chain discount to many customers. Bob's Sporting Goods ordered 20 skateboards for a total $639 list price. aints a. What was the net price of the skateboards? (Do not round intermediate calculations. Round your final answer to the nearest cent.) Answer is complete but not entirely correct. Net price 11,067 68 b. What was the trade discount amount? (Do not round intermediate calculations. Round your final answer to the nearest cent.) Answer is complete but not entirely correct. Trade discount $1,712.32