I have two questions regarding my Systems Understanding Aid project. I just need help with what journals do I record the transactions, which accounts and what amounts. Here are the questions.

12/26/2017: Made a special promotional sale on account to Rosemont University. Waren agreed to a 20% reduction in the selling prices of the following items:

Quantity Item No. Description

49 BA-054 Premium aluminum bat

22 BA-807 Pitching machine

12/28/2017: Received check No. 14002 fr $12,293.12 from Rosemont University in payment of the promotional sale on account made December 26

• Recall that the original ale was made at a 20% discount
• Because Rosemont paid within ten days of the original sale, be sure to record the applicable discount