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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
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