a) Give three examples of industries that often use process-costing systems [03 marks] b) Consider the following data for Firm XYZ Opening Work-In-Progress (01/06)* Started in June Completed During June Closing Work-In-Progress (30/06) Costs Added During June Physical Units Direct Materials Conversion Costs 32 20,000,000 4,000,000 200 184 48 120,000,000 52,000,000 * Degree of completion: direct materials, 90%; conversion costs, 40%. Degree of completion: direct materials, 60%; conversion costs, 30%. >> Use one decimal point for your calculations 1) - Calculate equivalent units of work done in the current period for direct materials and conversion costs. Show physical units in the first column [14 marks] ii)- Calculate cost per equivalent unit of opening work in progress and of work done in the current period for direct materials and conversion costs. [06 marks)