"That is everyone's problem."

Translation: 저것은 모두의 문제다.

[Flox251449]

I believe it should be '그것은'. The prefix '저' is used for something further away as a demonstrative and the problem is not said to be far away. Thus '그' is more appropriate as it means 'that'.

[MatthewEpp5]

Why wouldn't "저것은 여러분의 문제다" be correct?

[ostrichtastic2]

여러분 is used to adress people directly instead of refering to a group of people

[Sarah610755]

Can anyone tell me why 문제다 requires the 다 please?

[josueetcom]

It's the short plain/written form of 문제이다. You can drop the 이 in -이다 if the word ends in a vowel like in this case.

[Al-Asmawi]

should "그것은 모두의 문제예요" be accepted?

[chilamleung]

저것은 모두의 問題다.