Info Total $($RM$)$

Inventory carrying cost RM$5$ per unit per month

Subcontracting cost per unit RM$10$ per unit

Average pay rate RM$5$ per hour $($RM$40$ per day$)$

Overtime pay rate RM$7$ per hour $($above $8$ hrs per day$)$

Labor$-$hours to produce a unit $1\mathrm{.}6$ hours per unit

Cost of increasing production rate $($hiring$)$ RM$10$ per unit

Cost of decreasing production rate $($layoffs$)$ RM$15$ per unit