William$$ Beville's computer training$$ school, in$$ Richmond, stocks workbooks with the following$$ characteristics:

Demand D

$$units$/$year

Ordering cost S

$$$$/$order

Holding cost H

$$$$/$unit$/$year

Part $2$

$$a$)$ The EOQ for the workbooks is

$$

enter your response here $($round your response to the nearest whole$$ number$).$