Average Questions
Question
The average weight of 38 students of a class was 44 Kg. After 12 new students joined the class, the average weight increased by 4.68 Kg. What is the average weight of 12 new students who joined the class?
Solution
The average weight of 8 new students is 63.5 kg.
Solution:
Total weight of 38 students = 44 * 38 = 1672 kg
12 new students joined the class
Total student = 50
Average weight increased by 4.68 Kg
Average weight of 50 students = 44 + 4.68 = 48.68 kg
Total weight of 50 students = 50 * 48.68 = 2434 kg
Weight of 12 new students = 2434 - 1672 = 762 kg
Average weight of 12 new students = 63.5 kg.