A hamburger factory produces $40,000$ hamburgers each week. The equipment used costs $$8,000$ and will remain productive for four years. The labor cost per year is $$12,000.$

What is the productivity measure of "units of output per dollar of input" averaged over the four$-$year period? Assume that there are $52$ weeks per year. Round your answer to one decimal place.

Productivity: hamburgers$/$dollar

We have the option of $$12,000$ equipment, with an operating life of five years. It would reduce labor costs to $$9,000$ per year. Should we consider purchasing this equipment $($using productivity arguments alone$)?$ Assume that there are $52$ weeks per year. Round your answer for productivity to one decimal place.

For the expensive machine, productivity is hamburgers$/$dollar input. Because the productivity of the expensive machine is $,$ it would be a investment based on this single criterion.