"De rijke eend zwemt in zijn geld."
Translation:The rich duck is swimming in his money.
I have given the correct translation, only to be told it is incorrect. This happens often.
A screenshot would be helpful in figuring out the problem. If Duolingo's correction is exactly identical to your answer, you can submit it directly as a bug report here: https://support.duolingo.com/hc/en-us/requests/new