Esteban Products produces instructional aids, including white boards, which use colored markers instead of chalk. These are particularly popular for conference rooms in educational institutions and executive offices of large corporations. The standard cost of materials for this product is 10 pounds at $8.50 per pound. During the first month of the year, 3,600 boards were produced. Information concerning actual costs and usage of materials follows: Materials purchased 35,600 lbs. @ $8.60 Materials used 35,100 lbs