Averages
Posted by
Ravi Kumar at Friday, May 20, 2011
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Averages concepts
Averages:
*Average = (Sum of quantities)/(Number of quantities)
*Suppose a man covers a certain distance at x kmph
and an equal distance at y kmph ,then the average speed
during the whole journey is (2xy/x+y) kmph.
*To find the average of given numbers(72,59,18,101,7) just add all these numbers and divide the sum with number of given numbers.
*If a man covers a journey from A to B by car at an average speed of X kmph. He returns back with a scooter with Y kmph then his average speed during the whole journey is 2XY/X+Y kmph.