Problem:
On June 1, 2004, Noll Corp. sold merchandise with a list price of $30,000 to Linn on account. Noll allowed trade discounts of 30% and 20%. Credit terms were 2/15, n/40 and the sale was made f.o.b. shipping point. Noll prepaid $600 of delivery costs for Linn as an accommodation. On June 12, 2004, Noll received from Linn a remittance in full payment amounting to: