The mean age of 30 students in a class is 14 years .5 students with mean of 15 years left the class. Find the mean age of the remaining students?

3 answers

total age of 30 students: 420
total age of 5 dropouts: 75
total age of remaining 25 students: 345
mean age: 13.8
The mean of age of 30 students of a class is 14 year find students with mean age of 15 left the class then the find of mean of remaining students?
The mean age of 30 students in a class is 14 years. 5 students with mean age 15 years left the class. Find the mean age of the remaining student.