Problem 18.1A (Algo) Calculating Equlvalent Units (LO18-2, LO18-3) Brite Ideas, Inc., mass-produces reading lamps. Materials used In constructing the body of the lamp are added at the start of the process, while the materlals used in wring the lamps are added at the halfway point All labor and overhead are added evenly throughout the manuffacturing process. Brite Ideas uses process costing and had the following untt production Information avallable for the months of June and July. In June, the lamps in beginning work In process were approximately 90 percent complete, while those In ending work In process were only 30 percent complete. In July, the units remaining in ending work in process were 80 percent complete. All lamps In endling work in process are finished during the next month. Required: a. For the month of June, calculate the equivalent units of production for the three major cost categorles-body materlals, wirlng materlals, and labor and overhead. b. For the month of July, calculate the equlvalent units of production for the three major cost categorles-body materlals, wring materlals, and labor and overhead