The weighted average method counts prior-period work and costs in BWIP as if they belong to the current period; thus, the unit cost is obtained by dividing the sum of the costs in BWIP and the current-period costs by the weighted average equivalent output. The resulting unit cost is a blend of the prior-period u cost and the actual current-period unit cost. The valuation of cost of goods transferred out is simplified as it is the total unit cost multiplied by the units completed.