Home » Aptitude » Average
  1. Average:
    Average =Sum of observations
    Number of observations
  2. 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 is2xykmph.
    x + y
  3. Suppose a man covers equal distance at x km/hr, y km/hr and z km/hr. Then
    the average speed during the whole journey is   3xyz/(xy+yz+zx)
  4. summation of n numbers
  5. average of n numbers ( 1+2+3+............+n) = (n+1)/2