Question

Pls help
In class, there are 35 students. The average age of 10 is 12.8 Yrs., Average age of another 10 is 14.1 yrs. The average age of another 12 is 9.5 yrs. The average age of the remaining is 13.5 yrs. When a new student joins, the average age decreases by 0.1 yrs. Find the age of the new student.

Answer 1

Answer:

age of new cormer 9.22 I think