The mixing department of a company's output during the period consists of 25,000 units completed and transferred out, and 15,000 units in ending work in process that were 30% complete as to materials and conversion costs. Beginning inventory was 17,000 units that were 15% complete as to materials and conversion costs. How many units were started during the period under weighted average method?
27,000
25,000
23,000
17,000
None of the above
Can someone explain to me why the answer would be 23,000?