Learn Farsi: هر قدر بهره‌وری رشد می‌کند، به همان اندازه دستمزد بیشتر می‌شود. - The more productivity grows, the more the wage increases to the same extent.

Instead of repeating a comparative word like English does, Farsi uses a cause-and-proportion structure. har qadr means 'however much' or 'to whatever degree', and be hamân andâze means 'to that exact same measure' or 'extent'. So literally: 'However much productivity grows, to that same extent the wage becomes more.'

The lesson mentions 'har qadr (ke)' for this structure. Why is there no ke after har qadr here?

The conjunction ke (that) is optional in this correlative structure. Adding it to make har qadr ke is perfectly correct, but dropping it is very common in formal and informal Farsi to make the sentence more concise.

Why do both clauses use the present indicative (roshd mikonad and bishtar mishovad) instead of the subjunctive?

Because this sentence states a factual, guaranteed economic principle rather than a hypothetical scenario. When expressing a general truth or a definite habitual outcome, Farsi uses the indicative mood for both halves of the comparison.

What is the root of the word bahre-vari (productivity)?

It is built from bahre (share, profit, or benefit), the suffix -var (which means possessing or having), and the noun-forming suffix -i. Together, they form a word that essentially means 'the state of yielding a benefit', which is used for 'productivity'.