The average weight of a class of 22 students is 42 kg. If 2 new students of weight 33 kg and 39 kg are added to the class, then what will be the new average weight of 24 students
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3 i.e. 41.5 kg.
We know that,
Average = Sum of observations/Number of observations
Now,
The sum of weight of 22 students = 22 × 42 = 924
New weight of the class = 924 + 33 + 39 = 996
New average = 996/24 = 41.5 kg