At a local fitness center, members pay a $10 membership fee and $5 for each aerobics class. Nonmembers pay $6 for each aerobics class.For what number of aerobics classes will the cost for members and nonmembers be the same.

Question to answer: Thus, for *answer* aerobics classes, the cost will be the same for members and nonmembers

(answer must be a whole number)