LAST YEAR NOWUnits produced $1,0001,000$Labor $($hours$)300275$Resin $($pounds$)5045$Capital invested $($$$)10,00011,000$Energy $($BTU$)3,0002,850$

Show the productivity percentage change for each category and then determine the improvement for labor$-$hours, the typical standard for comparison. $[$PX$]$

$1\mathrm{.}6$George Kyparisis $($using data from Problem $1\mathrm{.}5)$ determines his costs to be as follows:

$$Labor: $$10$ per hour

$$Resin: $$5$ per pound

$$Capital expense: $1\%$ per month of investment

$$Energy: $$0\mathrm{.}50$ per BTU

Show the percent change in productivity for one month last year versus one month this year, on a multifactor basis with dollars as the common denominator.