The ledger of Custer Company has the following work in process account

The ledger of Custer Company has the following work in process account.Work in Process—Painting5/1 Balance is 4,3905/31 Materials 5,6905/31 Labor 3,6905/31 Overhead 2,1605/31 Balance ?5/31 Transferred out ?Production records show that there were 430 units in the beginning inventory, 30% complete, 1,490 units started, and 1,460 units transferred out. The beginning work in process had materials cost of $2,690 and conversion costs of $1,700. The units in ending inventory were 40% complete. Materials are entered at the beginning of the painting process.Calculated that there were 460 units in process at May 31.Question is:What is the unit materials cost for May?