Managerial accounting please help..

Builder Products, Inc., manufactures a caulking compound that goes through three processing stages prior to completion. Information on work in the first department, Cooking, is given below for May: Production data Pounds in process, May 1; materials 100% complete, conversion 90% complete 78,000 Pounds started into production during May 430,000 Pounds completed and transferred out Pounds in process, May 31: materials 70% complete: conversion 30% complete 38,000 Cost data: Work in process inventory, May 1: Materials cost 140,200 Conversion cost 70,400 Cost added during May: Materials cost 728,850 Conversion cost 386,930 The company uses the weighted-average method