please so work and explanation

Beginning Work in Process was 20,000 unaits 20% that were complete and 80,000 units started, with ending Wotk in Process of 18000 units that were 30% complete- If the manager adds matertals halfway diating the process and cotwenion costs occur iniformly during procesuing, what are the equivalent unies for material and comersion costs respectively under a weighted-average assumption? YOU WERE SURE AND INCORRECT 100.006;94,600 100,000;100,000 82,000,82,000 THECORRECT:ANSWER 100000; 87,400 IDONT'KNOW YET