প্রশ্ন সংশোধন করুন
প্রশ্ন:
The average age of a group o f10 students was 20. The average age increased by 2 years when two new students joined the group students who joined the group?
The average age of a group o f10 students was 20. The average age increased by 2 years when two new students joined the group students who joined the group?