please help and explain!

Alvis Construction Supply Company has a department that manufactures wood trusses (wood frames used in the construction industry). The following information is for the production of these trusses for the month of February: Required Using the FIFO method, calculate the following: 1-a. Equivalent units. 1-b. Costs per equivalent unit. (Round your answers to 4 decimal places.) 1-c. Cost of goods completed and transferred out. (Do no round your intermediate calculations. Round your final answer to the nearest whole dollar.) 1-d. Costs remaining in the Work-in.Process Inventory account. (Do no round your intermediate calculations. Round your final answer to the nearest whole dollar.)