There are $$150$$ students in the level and they are divided into teams of three. It is found that:  (i) There are $$15$$ teams with only $$1$$ boy.  (ii) There are $$27$$ teams with two or more boys.  (iⅲ) The number of all$$-$$boy teams is twice the number of all$$-$$girl teams.  How many girls are there in the level? 
Overseas Competition->Knowledge Point->Word Problem Modules->Questions Involving Sum, Difference and Multiples->Basic Computation of the Multiples