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 A, B and C is 45 kg. If the average weight of A and B be 40 kg and that
B and C be 43 kg, then the weight (in kg) of B is :
