Builder Products, Incorporated, uses the weighted$-$average method in its process costing system. It 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:

$\backslash$table$[[$Production data:,$],[$Pounds in process, May $1$; materials $100\%$ complete;,$89,000],[,$ conversion $90\%$ complete,$540,000],[$Pounds started into production during May,?$],[$Pounds completed and transferred out,$60,000],[$Pounds in process, May $31$; materials $80\%$ complete;,$],[,$ conversion $20\%$ complete,$],[$Cost data:,$$124,400$