Question
Tommy has a mass of 6s kg. Ethan is 5 kg heavier than Tommy. The mass of Gwen is twice the total mass of Tommy and Ethan.
  1. Find the total mass of the 3 children in terms of s.
  2. If s = 2, find the average mass of the 3 children.
2 m
(a)

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(b)

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Tommy has a mass of 6s kg. Ethan is 5 kg heavier than Tommy. The mass of Gwen is twice the total mass of Tommy and Ethan.
  1. Find the total mass of the 3 children in terms of s.
  2. If s = 2, find the average mass of the 3 children.