your guess is as good as mine

US /jʊər ɡɛs ɪz æz ɡʊd æz maɪn/
UK /jʊər ɡɛs ɪz æz ɡʊd æz maɪn/
"your guess is as good as mine" picture
1.

tebakanmu sama bagusnya dengan tebakanku, aku juga tidak tahu

used to say that you do not know the answer to a question, or do not know what is happening, for the same reason as the person asking

:
Why did he leave so suddenly? Your guess is as good as mine.
Mengapa dia pergi begitu tiba-tiba? Tebakanmu sama bagusnya dengan tebakanku.
When will the new policy be implemented? Your guess is as good as mine.
Kapan kebijakan baru akan diterapkan? Tebakanmu sama bagusnya dengan tebakanku.