The average age of 30 students in a class is 15 years. When a new student is admitted, the average increases by 0.5 years. What is the age of the new student?

Question

Accepted Answer

1. Total age of 30 students = $30	imes15=450$.  
2. New average = $15+0.5=15.5$. Total for 31 students = $31	imes15.5=480.5$.  
3. Age of new student = $480.5-450=30.5$.  
4. So the new student is **30.5** years old.  
FINAL_ANSWER: a

Answer

Answer

Answer