Question
The total mass of Riordan and Peter is 180 kg. The total mass of Wesley and Peter is 121 kg.
  1. How much heavier is Riordan than Wesley?
  2. If the total mass of the 3 boys is 249 kg, how heavy is Peter?
4 m
(a)

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(b)

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The total mass of Riordan and Peter is 180 kg. The total mass of Wesley and Peter is 121 kg.
  1. How much heavier is Riordan than Wesley?
  2. If the total mass of the 3 boys is 249 kg, how heavy is Peter?