Question
Liam has a mass of 6a kg. Carl is 3 kg heavier than Liam. The mass of Nora is twice the total mass of Liam and Carl.
  1. Find the total mass of the 3 children in terms of a.
  2. If a = 3, find the average mass of the 3 children.
2 m
(a)

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(b)

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Liam has a mass of 6a kg. Carl is 3 kg heavier than Liam. The mass of Nora is twice the total mass of Liam and Carl.
  1. Find the total mass of the 3 children in terms of a.
  2. If a = 3, find the average mass of the 3 children.