The average weight of 8 students is 48 kg. If four students with an average weight of 44 kg and four students with an average weight of 58 kg are also added, then find the average weight of 16 students.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. 49.5 kg.
Given that
The average weight of 8 students is 48 kg
The total weight of 8 students = 48 × 8 = 384 kg
If four students of average weight 44 kg and four students of average weight 58 kg are also added
Now, total weight of students = 384 + 44 × 4 + 58 × 4
⇒ 384 + 176 + 232 = 792 kg
Hence, the required average = 792/16 = 49.5 kg