Important Things To Remember: Replacement case: Weight of new person = Weight of outgoing person + No of person (inc in average) Weight of new person = Weight of outgoing person - No of person...
WHILE STUDYING ANY TOPIC MAKE SURE THAT AVOID MULTIPLE SOURCES. INSTEAD PICK UP ONE STANDARD SOURCE AND THE CONTENT OF WHICH YOU CAN COMPREHEND. READ IT MULTIPLE TIMES...FRAME A PICTURE IN MIND....ANALYSE...