In a math exam, the average grade was 82 and the standard deviation was 5. All students with grades from 88 to 94 received a grade of "B+".

In a math exam, the average grade was 82 and the standard deviation was 5. All students with grades from 88 to 94 received a grade of “B+”. If the grades are approximately normally distributed and 8 students received a “B+”, how many students took the exam?