On May 7, Bergan Company purchased on account 10,000 units of raw materials at $8 per unit. During May, raw materials were requisitioned for production as follows: 7,500 units for Job 200 at $8 per unit and 1,480 units for Job 305 at $5 per unit. Journalize the entry on May 7 to record the purchase and on May 31 to record the requisition from the materials storeroom.