Worked problems $($Show calculations in order to get full credit$)$

$1.$ The CEO has asked you to evaluate the firm's productivity by comparing performance a month from last year and equivalent month this year. The following data are available: $(10$ points$)$

Last Year This Year

Output $11,200$ units $13,000$ units

Labor $($hours$)10,00010,200$

Utilities $($BTUs$)5,6006,250$

Capital $$81,000$ $$86,000$

The CEO determines his costs to be as follows:

$$ Labor $$20$ per hour

$$ Utilities $$0\mathrm{.}60$ per BTU

$$ Capital $20\%$ per month of investment.

Show the productivity change, for one month last year versus one month this year, on a multifactor basis.