Learn Finnish: Moni nuori päätyy työelämään aikaisin. - Many young people end up in working life early.

The verb päätyä (to end up) is a resolution verb. In Finnish, verbs describing ending up, striving, or settling require the illative case (the 'into' case). This is because Finnish focuses on the figurative movement toward the final outcome or destination, rather than the static location where someone is currently resting.

Why are moni nuori and the verb päätyy in the singular when the English sentence says 'many young people'?

The pronoun moni is grammatically singular in Finnish, so the noun it modifies (nuori) and the verb (päätyy) must also be in the singular. While you can use the plural monet nuoret, that usually refers to a specific, defined group (many of those specific young people), whereas the singular moni nuori refers to young people as a general demographic.

What is the relationship between päätyä and päättää?

Both verbs share the same root, pää (head or end). Päättää is an active, transitive verb meaning to decide or to end something. Päätyä is its automative counterpart, meaning to end up somewhere or result in something, often passively or without deliberate planning.

Is the word aikaisin related to aika (time)?

Yes! Here, aikaisin functions purely as an adverb meaning 'early'. While it historically relates to the word aika and looks like a superlative or instructional form, for a B2 learner it is easiest to treat it as a fixed, independent adverb.