The average weight of 20 boxes of oranges is 2 kg, and the average weight of 30 boxes of mangoes is 3 kg. Find the average weight of these boxes of fruits, taken together.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 2.6 kg
Average = (Sum of all observations)/(Total number of observations)
Sum of weight of 20 boxes = 20 x 2 = 40 kg
And sum of weight of 30 boxes = 30 x 3 = 90 kg
Required average of all the boxes = (90 + 40)/(20 + 30)
⇒ 130/50 = 2.6 kg