On March 3, Cobra Incorporated purchased a desk for $400 on…

On Mаrch 3, Cоbrа Incоrpоrаted purchased a desk for $400 on account. On March 22, Cobra purchased another desk for $500 also on account, and then on March 24, Cobra paid $420 on account. At the end of March, what amount should Cobra report for desks (assuming these two desks were the only desks they had)?