The average weight of 10 boxes is 15.5 kg. If the heaviest box weighs 21 kg and the lightest weighs 10 kg, what is the average weight of the remaining boxes?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 15.5 kg.
Total weight of 10 boxes = 15.5 × 10 = 155 kg
Heaviest = 21 kg and Lightest = 10 kg
Sum of remaining 8 boxes = 155 – 21 – 10 = 124 kg
Average of remaining boxes = 124/8 = 15.5 kg