Average:
Average = Sum of observations / Number of observations
Average Speed :
Suppose a man covers a certain distance at x kmph and an equal distance at y kmph.
Then, the average speed druing the whole journey is [2xy/(x+y)] kmph.
Question 1
Q1. The average weight of 40 children of a class is 36.2 kg. When three more children with weight
42.3 kg, 39.7 kg and 39.5 kg join the class, the average weight of the 43 children in the class is :
