1. The mean weight of 60 students of a school is 62.75 kg. If the mean weight of 50 of them is 61 kg, Find
the mean weight of the remaining students.
I
Cinderen
Answers
Answered by
0
10.5 kg
Solution:
Mean weight of 60 students = 62.75 kg
Total weight of 60 students = 62.75 × 60 kg
= 3765 kg
Mean weight of 50 students = 61 kg
Total weight of 50 students = 61 × 60 kg
= 3660 kg
Total weight of remaining 10 = (3765 - 3660) kg
= 105 kg
Mean weight of remaining 10 = (105 ÷ 10) kg
= 10.5 kg
Similar questions