Question 83

The average age of 30.students of a class is 14 years 4 months. After admission of 5 new students 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 studentsis

Solution

According to the question,

Total age of 30 students = 30×( 14 years 4 months)=30×1413

= 30×433=430 years

Total age of (30 + 5) students = 35 (13 years 9 months)

= 35×1334=19254 years

Total age of 5 students = 19254-430

= 2054 = 51 years 3 months

One of the new five student is = 9 years 11 month old

Remaining 4 students age = 41 years 4 months4

Create a FREE account and get: