9. Stephen Black currently receives a trade discount series of 5/10/10 on merchandise purchased from a furniture com- pany. He is negotiating with another furniture manufacturer to purchase similar furniture of the same quality. The first company lists a dining room table and six chairs for $1,899. The other company lists a similar set for $1,800 and a trade discount series of 5/5/10. Which deal is better? 10. We have seen that the trade discount series 20/10/5 is not equal to a single trade discount rate of 35%. Does the trade discount series 20/10/5 equal the trade discount series 5/10/20? Use an item with a list price of $1,000 and calculate the trade discount for both series to justify your