A large sporting goods store is placing an order for bicycles with its supplier. Four models can be ordered: the adult Open Trail, the adult Cityscape, the girl's Sea Sprite, and the boy's Trail Blazer. It is assumed that every bike ordered will be sold, and their profits, respectively, are $30,25,22,$ and $20.$ The LP model should maximize profit. There are several conditions that the store needs to worry about. One of these is space to hold the inventory. An adult's bike needs two feet, but a child's bike needs only one foot. The store has $500$ feet of space. There are $1200$ hours of assembly time available. The child's bike needs $4$ hours of assembly time; the Open Trail needs $5$ hours and the Cityscape needs $6$ hours. The store would like to place an order for at least $275$ bikes.

Formulate an objection function and constraints and use solver to solve.

$9300\mathrm{.}00$

$7450\mathrm{.}00$

$6850\mathrm{.}00$

$5200\mathrm{.}00$