Question
Perry has a mass of 5t kg. David is 3 kg heavier than Perry. The mass of Lucy is twice the total mass of Perry and David.
  1. Find the total mass of the 3 children in terms of t.
  2. If t = 3, find the average mass of the 3 children.
2 m
(a)

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(b)

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Perry has a mass of 5t kg. David is 3 kg heavier than Perry. The mass of Lucy is twice the total mass of Perry and David.
  1. Find the total mass of the 3 children in terms of t.
  2. If t = 3, find the average mass of the 3 children.