Inventory carrying cost

$$$$5$ per unit per month

Subcontracting cost per unit

$$$$10$ per unit

Average pay rate

$$$$5$ per hour $($$$40$ per$$ day$)$

Overtime pay Rate

$$$$7$ per hour$($above $8$ hrs per$$ day$)$

$$Labor$-$hours per unit

$1\mathrm{.}6$ hrs per unit

Cost of increasing daily production rate$($hiring &$$ training$)$

$$$$300$ per unit

Cost of decreasing daily production rate$($layoffs$)$