প্রশ্ন সংশোধন করুন
প্রশ্ন:
The average age of a group of 10 students is 15 years . when 5 more students joined the group , the average age rise by 1 year. what is average age of the newly joined students?
The average age of a group of 10 students is 15 years . when 5 more students joined the group , the average age rise by 1 year. what is average age of the newly joined students?