됐을까

became?; turned out?

→ 되다
verb · informal, past tense Rare #21,631
became?; turned out? Used when wondering what happened or how something turned out; the best translation depends on context.
KO: 그 계획은 어떻게 됐을까?
EN: What happened to that plan?
Conjugation of 되다

근데 나 왜 이렇게 됐을까?

But I wonder why I ended up like this?

— 박쥐 (2009)

어떻게 됐을까?

What happened?

— 저수지의 개들 (1992)

다들 어찌 됐을까?

What happened to everyone?

— 천공의 성 라퓨타 (1986)