A mean average of 60 on 7 exams is needed to pass a course. On her first 6 exams, Sheryl received grades of 48, 74, 76, 61, 70 and 78. What grade must she receive on her last exam to pass the course? 13 An average of 70 is needed to get a C in the course. Is it possible for Sheryl to get a C? No Yes If her lowest grade of the exams already taken is to be dropped, what grade must she receive on her last exam to pass the course?