Answer:
1. Mar. 10: 500 units of raw materials were purchased on account at $4.00 per unit.
March 10, 202x, 500 units of raw materials purchased on account:
Dr raw materials inventory 2,000
Cr Accounts payable 2,000
2. Mar. 15: 250 units of raw materials were requisitioned at $4.50 per unit for production, Job 872.
March 15, 202x, 250 units of raw materials requisitioned for Job 872
Dr Work in Process 1,125
Cr Raw materials inventory 1,125
3. Mar. 25: 215 units of raw materials were requisitioned at $5.00 per unit for production, Job 879.
March 25, 202x, 215 units of raw materials requisitioned for Job 879
Dr Work in Process 1,075
Cr Raw materials inventory 1,075