Valley Manufacturing Company's beginning work$-$in$-$process inventory consisted of $40,000$ units, $100\%$ complete with respect to materials cost and $40\%$ complete with respect to conversion costs. The total cost in the beginning inventory was $$120,000.$ During the month, $50,000$ units were transferred out. The equivalent unit cost was computed to be $$2\mathrm{.}80$ for materials and $$3\mathrm{.}50$ for conversion costs under the weighted$-$average method. Given this information, what was the total cost of the units completed and transferred out?

$$255000$

$$270000$

$$240000$

ormation

$$315000$