Edmund stench consumes two commodities, namely garbage and punk rock video cassettes. he doesn't actually eat the former but keeps it in his backyard where it is eaten by billy goats and assorted vermin. the reason that he accepts the garbage is that people pay him $2 per sack for taking it. edmund can accept as much garbage as he wishes at that price. he has no other source of income. video cassettes cost him $6 each.

There is no clearly defined question and grammatical errors are in the text above. That said, the text begs the question why does Edmund consume cassettes? The answer is that the cassettes attract billy goats and the goats eat the garbage. Edmund can earn a living as long as each $6 cassette attracts enough of the goats to consume 3 garbage sacks. To be profitable, one cassette must attract enough goats to consume 4 sacks of garbage.

Iwould say the answer is 4.

Units because it is measurable