This is the 1516th most frequent Catalan word.
ajudat
"Helped."
In this sentence, 'ajudat' is used as a past participle of the verb 'ajudar', indicating that the student was the one being assisted.
L'estudiant ha rebut un gran ajut al ser ajudat pel mentor.
The student has received great help by being assisted by the mentor.
Here, 'ajudat' is part of a past infinitive construction 'haver ajudat' which signifies the act of having helped in the past.
Ajuda el teu company a acabar la tasca, si creus que pots permetre't haver ajudat algú avui.
Help your colleague finish the task if you think you can afford to have helped someone today.
In this case, 'ajudat' is again used as a past participle, in a passive construction, emphasizing the fact that assistance occurred.