A company experiences annual demand of

$2$

$,$

$1$

$6$

$0$

$$units for an item that it purchases. The rate of demand per day is very stable, with very little variation from day to day. The item costs $

$6$

$0$

$$when purchased in quantities less than

$1$

$8$

$0$

$$and $

$5$

$8$

$$for

$1$

$8$

$0$

$$items or more. Ordering costs are $

$5$

$0$

$$and the carrying cost is

$2$

$5$

$$percent$.$