Consider the data of year 2018 and 2019 for a particular manufacturer For year 2018, item costs are $120 and total sales is 320 units. Total value of sales is $38400, Labor cost are $10000 and raw material costs are $8500 Energy bill for year 2018 is $4500 and Overhead costs are $2200 For year 2019, item costs are $120 and total sales is 300 units. Total value of sales is $36000. Labor cost are $8500 and raw material costs are 57500, Energy bill for year 2019 is $6500 and Overhead costs are $2000 1. What is Raw Material Productivity? Did it improve in year 2019 in comparison to 2018? 2. What is Labor and Overhead (multifactor) Productivity? Did it improve in year 2019 in comparhon to 2018