The average age of 14 students of a class is 17 years. If a new student of age 32 years joins the class, then what will be the average age of these 15 students?

Correct option is D

Given:
Average age of 14 students = 17 years
Age of new student = 32 years
Formula Used:
New Average = (Sum of ages of all students) / (Total number of students)
Solution:
Total age of 14 students = 14 * 17 = 238 years
After adding the new student, total age = 238 + 32 = 270 years
New average age = 270 / 15 = 18 years