Martinez Company$$s relevant range of production is $7,500$ units to $12,500$ units. When it produces and sells $10,000$ units, its average costs per unit are as follows:

Average Cost Per Unit

Direct materials $ $5\mathrm{.}50$

Direct labor $ $3\mathrm{.}00$

Variable manufacturing overhead $ $1\mathrm{.}50$

Fixed manufacturing overhead $ $4\mathrm{.}00$

Fixed selling expense $ $2\mathrm{.}50$

Fixed administrative expense $ $2\mathrm{.}00$

Sales commissions $ $1\mathrm{.}00$

Variable administrative expense $ $0\mathrm{.}50$

$8.$ If $12,500$ units, what is the average fixed manufacturing cost per unit produced