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

Demand D

$19,100$ units$/$year

Ordering cost S

$$$$25/$order

Holding cost H

$$$$4/$unit$/$year

Part $2$

$$a$)$ The EOQ for the workbooks is $489($round your response to the nearest whole$$ number$).$

Part $3$

$$b$)$ What are the annual holding costs for the$$ workbooks? $$$$978($round your response to the nearest whole$$ number$).$

$$c$)$ What are the annual ordering$$ costs? $$$