Cullumber Company on July 15 sells merchandise on account to Concord Co. for $3900, terms 5/10, n/30. On July 20 Concord Co. returns merchandise worth $1100 to Cullumber Company. On July 24 payment is received from Concord Co. for the balance due. What is the amount of cash received? $2605 $2660 $2800 $3900