"Est-ce que vous ajoutez du sel ?"

Translation: Do you add some salt?

[Tom419655]

This answer is requiring the word "some" be included; that has not been required in other cases.

[arandaneri]

I typed:

"Do you add salt?"
(without "some")

and it was marked correct as of Sep 11th 2018.

[D3XT3RY0NuT]

As of December 30th 2018, it was not marked correct.

[biscuitamericain]

''are you adding salt '' should be fine, by me

[GQ6DPMwR]

couldn't you just ask, "ajoutez-vous du sel?"

[arandaneri]

It should.
Next time you come across this exercise translate it that way. But it would be easier and faster to use a translator and double check ;-)

[Louise616982]

i think I wrote du sel in another case and it was incorrect, "de" was required--pourquoi?