Hirsch Company buys inventory for $20,000 on terms of 2/10, n/30. It pays within the discount period.

I already have the answer for the first part of the question for the periodic inventory system, I just need the section below about the perpetual inventory system.

2.	Prepare the journal entries to record the purchase and payment under both the (a) gross price and the (b) net price methods. Assume that Hirsch uses a perpetual inventory system.