शिक्षा का त्यौहार Class 11 Course|कैसे ले Admission

Class 6 To 10 Courses

Class 11 कैसे करें आसान

Class 11 Challenges and Distractions

Class 11 की पढ़ाई कैसे शुरू करें ?

Revision of class 11

The average age of 30 students of a class is 14 years 4 months. After admission of 5 new student in the class the average becomes 13 years 9 months. The youngest one of the five new students is 9 years 11 months old. The average age of the remaining 4 new students is :

The average age of 40 students of a class is 16 years. After admission of 10 new students to the class, the average becomes 15 years. If the average age of 5 new students is 11 years then average age (in years) of the remaining 5 new students is