When I hover over workers - it says pekerja-pekerja - but when I write 'dia punya sepuluh pekerja pekerja' it is marked as incorrect - the words in the hover should be consistent with the answer
I think 'pekerja-pekerja' is correct for workers if there is no numeral. If plural is indicated by a number, you can't use the plural form.
Pekerja-pekerja = workers
Nevertheless perkerja can mean workers, the hint shd show both options and not one.
They need to be consistent with the answers & hints
or: Dia punya sepuluh orang pekerja
Agree with above comments. Something is not clear or consistent here.