Last week, a class of $$36$$ students took a Mathematics test. The  average score of the class was $$89$$. The girls\textquotesingle{} average score was $$88$$  while the boys\textquotesingle{} average score was $$91$$. How many girls were there in  the class? 
Overseas Competition->Knowledge Point->Word Problem Modules->Equation Word Problems->Word Problems for Linear Equations with One Variable