Can one also say "Kiam ni ekmanĝos?"
Much more elegant than "moooooooom, when is it gonna be reeeaaaadyyyy?".
Should it take "When do we start eating?" or "When do we eat?"
Both of those would be asking about the future, though I don't see a future tense in "When do we eat?" .
"Will start" why this answer is wrong?
Possibly because of word order. To indicate a question in English, the subject and verb are usually switched:
When will we start eating?
We will start eating now.
Instead of eating wouldnt it be to eat since its mangi?
Mangi = "to eat".....Sometimes they want literal word for word, other times just general meaning.
It's common for an infinitive (-i) to translate into a participle (-ing). The same thing happens in other courses, like the Spanish one.
I wrote: When will we begin to eat. Duolingo said that it is correct.