"Ta lettre est relative à quoi ?"

Translation: Your letter is related to what?

[Canvasian]

Is perhaps "What is your letter regarding?" a better translation? "Your letter is related to what?" is either really awkward English or actually incorrect English...

[Nacho.Danders]

It accepted "What is your letter about?"

[lpacker]

What is your letter concerning?

[VDKblue]

It does not sound very natural in French. It is better to say "Ta lettre concerne quoi ?" or "Que concerne ta lettre ?'

[gtmckee]

I think 'relative to' has the same meaning in English as 'relating to' and 'related to' so should be acceptable.

[PatrickJaye]

'Related to' or 'relating to' in this context means what is the letter about - 'relative to' would mean what is the letter compared to - which would not make much sense in this context

[n6zs]

The displayed translation "Your letter is related to what?" is correct, but awkward in English. Thankfully, Duo now accepts "What is your letter about?"

[K.Alix]

Why is "To what does your letter relate?"

[Alice54_Maree3.]

I put-To what is your letter relating >--and was marked wrong.I don't really know why

[Cerberusia]

I put that and was rejected, even though it means exactly the same thing as 'What does your letter relate to?' but without the dangling preposition, so stylistically preferable.

[Persikov]

regards?

[Azuremars]

"Your letter pertains to what?" sugested

[ClareRonald]

I agree having made the same mistake

[chdonger]

How about what is related to your letter, I think it is better

[PatrickJaye]

@chdonger

The French sentence means "what is your letter about"

Your suggestion would be equivalent to "what about is your letter" - that doesn't really make sense in English does it?

[cogges]

Could you say "What does your letter refer to?" or "To what does your letter refer?"