Eric Johnson makes billiard balls in his New England plant. With recent increases in his costs, hehas a newfound interest in efficiency. Eric is interested in determining the productivity of hisorganization. He has the following data representing a month from last year and an equivalentmonth this year:Costs Last Year Now Units Produced $1,0001,000$ Labor $($hours$)$ $$10/$hr $300$ hrs$\mathrm{.}275$ hrs$.$Resin $($pounds$)$ $$5/$pound $50$ pounds $45$ pounds Energy $($BTU$)$$$0\mathrm{.}5/$BTU$3,000$ BTU $2,850$ BTUa. Show the productivity change for each category. b$.$ Show the productivity change, for one month last year versus one month this year, on amultifactor basis dollar as the common denominator.