Question
Perry weighs i kg while Simon weighs 21 kg.
  1. Find the average mass of each boy in terms of i.
  2. If i = 57, find the average mass of each boy. 
2 m
(a)

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(b)

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Perry weighs i kg while Simon weighs 21 kg.
  1. Find the average mass of each boy in terms of i.
  2. If i = 57, find the average mass of each boy.