For the first quarter of 20X1 (Q1), REA's Balance Sheet reported Accounts Receivable (AR) of $20K. (For REA, AR represents issued but unpaid invoices). During Q2, all but $5K of the outstanding Q1 invoices were paid. At the end of Q2, REA's CFO noted that $10K of the $30K of invoices issued during quarter were unpaid.

What amount of AR should be reported on REA's Q2 20X1 Balance Sheet?