Boston Dollar Store uses the gross method to record purchase discounts and uses a perpetual inventory system. Boston engaged in the following transactions during April: 4/12 Purchased $15,000 in merchandise subject to terms of 2/10, n/30. The goods were shipped f.o.b. shipping point 4/13 Received a billing from Orange Freight Lines for $300 for the 4/12 purchase. 4/15 Returned $1,000 of merchandise from the 4/12 purchase. 4/20 Paid balances due from 4/12 purchase.