Question
Vincent has a mass of 6b kg. Luis is 3 kg heavier than Vincent. The mass of Kathy is thrice the total mass of Vincent and Luis.
  1. Find the total mass of the 3 children in terms of b.
  2. If b = 2, find the average mass of the 3 children.
2 m
(a)

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(b)

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Vincent has a mass of 6b kg. Luis is 3 kg heavier than Vincent. The mass of Kathy is thrice the total mass of Vincent and Luis.
  1. Find the total mass of the 3 children in terms of b.
  2. If b = 2, find the average mass of the 3 children.