@Rachel525: This is not so much a math question as it is a concept question. In fact, there's no need to solve for any of the amounts in the answer choices. The way you have to look at it is that there are only a few things that a supervisor can control, one of which is the efficiency of his workers in the production process. So let's break down the answer choices in layman's terms, starting from wrong to right:
B – units per pound. Can he control how many units are produced from a pound of materials? No. This one is out.
C – units per dollar input. This is calculated by multiplying 300 hours * 15/hour = $4,500. 1,500 units/$4,500 = 0.3333 units per input hour. I would say this is a close second answer choice, but you really cannot control the cost of labor hours ($15/hr) so this would not be the best answer choice. This one is out.
D – $15 per labor hour. As I said for answer C, you can't control the price of labor. This one is out.
Which leaves us with A. Can you control how many units are produced in an hour? Yes. The more efficient you are, the more units you'll produce and vise versa. Therefore, this is the correct answer.
I know this isn't the Becker text book answer, but hopefully this helped! Sometimes breaking it down by process of elimination is the way to go.
FAR- 72, 81
AUD- 81 (exp), 87
REG- 52, 66, 66, 76!!!
BEC- 67, 71, 71, retake 11/2015