We have seen that the trade discount series 20/10/5 is not equal to a single trade discount

Question:

We have seen that the trade discount series 20/10/5 is not equal to a single trade 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 answer.
Discount Rate
Depending upon the context, the discount rate has two different definitions and usages. First, the discount rate refers to the interest rate charged to the commercial banks and other financial institutions for the loans they take from the Federal...