What is the plural of blanketi?
Plural is the same as singular, because blanketi is N/N noun group, so it doesn't distinguish between singular and plural https://en.wiktionary.org/wiki/blanketi
It can also be in the JI/MA class, so it could be mablanketi.
How to know which Word is in which class? They are so mixed
Since this is the JI/MA course, I dare say it's regarded JI/MA at least within this exercise (even if it could be both). In that case, mablanketi.
I think officially the plural is banketi, but sometimes people use mablanketi. I think blanketi is more widely used though
So could this translation be 'we need blankets'?