The ledger of Ivanhoe Company has the following work in process inventory account: Work in Process Inventory-Painting 5/1 Balance $3,570 5/31 Completed and transferred out $? 5/31 Direct materials 7,340 5/31 Factory labour 2,430 5/31 Manufacturing overhead 1,276 5/31 Balance Production records show that there were 410 units in the beginning inventory, 35% complete, 1,150 units started into production, and 1.150 units completed and transferred out. The beginning work in process inventory had materials costs of $2,020 and conversion costs of $1,550. The units in ending inventory were 40% complete as to conversion costs. Materials are entered at the beginning of the painting process, and conversion costs are incurred uniformly throughout the process. (a) How many units are in process at May 31?