In a class of 10 students the average age was 16 years. When two students left the class, the av...

In a class there are 50 students.Their average weight is 45 kg.When a student leaves the class,the average is reduced by 100 g.Find the weight of the student who left the class.

The average of the ages of 15 students in a class is 19 years. When 5 new students are admitted to the class, the average age of the class becomes 18.5 years. What is the average age of the 5 newly admitted students ?

The average age of all the 20 students of a class is 24. The minimum age of a student is 18 and the maximum age of another student in the same class is 30 years. When the two students whose average age was 26 years resticted from the class but later on one of the resticated student was readmitted. Now the average age of the class is:

The average age of a class is 21 years. If a student with age 42 years joins the class, then new average age becomes 24 years. How many total students are there in the class?

In a class of 60 students, the average age of 25 girls is 12 yr and boys is 14 yr. Two of the students aged 16 and 14 yr leave the class and are replaced by 3 students of ages 12,11 and 10 yr, Find the change in average age of the class.

The average age of a class was 15 years.When 5 boys whose average age was 12 years 6 months were admitted in the class,the average was reduced by 6months.How many students were there in the class originally?

Average age of 17 student of a class is 16 years. If a new student join the class then average age becomes 20. Then find the age of new student.

The average age of an adult class is 40 years. 12 new students with an average age of 32 years join the class, thereby decreasing the average of the class by 4 years. Find the original strength of the class