The queen size mattress has a catalog price of 428.99 dollars. NOw, it has a trade discount rate or 20% => 20% / 100% = .20 Next is to do the solution: => 428.99 * .20 = 85.798 dollars or 85.80 Now, let's find out the net price: => 428.99 - 85.80 = 343.19 dollars or 343.2.
