a. Sold merchandise on account, $21,950 with terms 2/10, n/30. The cost of the goods sold was $13,170. If an amount box does not require an entry, leave it blank. 88 b. Received payment less the discount. If an amount box does not require an entry, leave it blank. Refunded $510 to customer for defective merchandise that was not returned. If an amount box does not require an entry, leave it blank