Question
The total mass of Fred and Liam is 166 kg. The total mass of Bryan and Liam is 129 kg.
  1. How much heavier is Fred than Bryan?
  2. If the total mass of the 3 boys is 234 kg, how heavy is Liam?
4 m
(a)

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(b)

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The total mass of Fred and Liam is 166 kg. The total mass of Bryan and Liam is 129 kg.
  1. How much heavier is Fred than Bryan?
  2. If the total mass of the 3 boys is 234 kg, how heavy is Liam?