Asummer camp wants to hire counselors and aides to fill its staffing needs at minimum cost. the average monthy salary of a counselor is $2400 and the average monthly salary of an aide is $1100. the camp can accommodate up to 45 staff members and needs at 30 to run properly. they must have at least 10 aides and at least 12 counselors. how many counselors and how many aides should the camp hire to minimize cost?