YOU SAID:

Could you tell me how old the Earth is?

INTO JAPANESE

地球がどれだけ古いのか教えていただけますか。

BACK INTO ENGLISH

Could you tell me how old the earth is?

INTO JAPANESE

あなたは地球がどのくらい古いのか教えていただけますか？

BACK INTO ENGLISH

Could you tell me how old the earth is?