Let’s look at some Korean patters that you should now.

Phrases

(Time)쯤 걸리다 - It will take about (time)

얼마쯤 걸려요? - How long is it going to take? ( Informal polite )

3년쯤 걸려요 - It will take about 3 years ( Informal polite )

이 프로젝트 얼마나 걸려요? - How long will this project take? ( Informal polite )

이 프로젝트는 3년쯤 걸려요 - This project is going to take about 3 years ( Informal polite )

여기 오는 데 얼마나 걸려요? - How long does it take to come here? ( Informal polite )

여기 오는데 10분쯤 걸려요 - It will take about 10 minutes to come here ( Informal polite )

시애틀에서 서울까지 가는 데 얼마나 걸려요? - How long does it take to go from Seattle to Seoul? ( Informal polite )

시애틀에서 서울까지 가는 데 12시간쯤 걸려요 - It takes about 12 hours to go from Seattle to Seoul. ( Informal polite )