Charm Enterprises production budget shows the following units to be produced for the coming three months: April May June Units to be produced 3,310 3,630 3,510 A finished unit requires five ounces of key direct material. The March 31 Raw Materials Inventory has 7,260 ounces (oz.) of the material. Each month's ending Raw Materials Inventory should be 40% of the following month's production needs. Materials purchases in May should be?