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. A man spends Rs. 1800 monthly on an average for the first four months and Rs. 2000 monthly
for the next eight months and saves Rs. 5600 a year. His average monthly income is :
