The average weight of 25 students of Section A of a class is 60 kg, while the average weight of 35 students of Section B of the same class is 62.5 kg. Find the average weight of all 60 students of the class.
A60.5
B62.2
C61.2
D61.46 ✓ Correct
Correct answer: (D) 61.46
Explanation
The combined average is about 61.46 kg.
Section A: 25 x 60 = 1500 kg.
Section B: 35 x 62.5 = 2187.5 kg.
Total = 3687.5 kg over 60 students.
Average = 3687.5 / 60 = 61.46.
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