Roman C. answered • 01/28/13

Masters of Education Graduate with Mathematics Expertise

The number of tents she needs for n campers is Ceiling(n/3). The reason is that if we divide n by 3, to get a quotient q and remainder r, then the first q tents will hold three students each, and, if r > 0, the last tent is needed to hold the last r students. Finally, since the leader needs a separate tent for herself, the total number of tents she needs if she brings n campers with her is 1+Ceiling(n/3).