help me solve 5-8

Merchandise purchase: trade discount, return-perpetual LO3 re journal entries to record each of the following transactions of a mercha apporting calculations. Assume a perpetual inventory system. 5 Purchased 500 units of product with a list price of $5 per unit. The purchaser was 9 20% and the terms of the sale were 2/10, 1/60 7 Returned 50 defective units from the March 5 purchase and received full credit. 15 Paid the amount due resulting from the March 5 purchase, less the return on March 9 Sale of merchandise: trade discount-perpetual LO3