Question
The total mass of Oliver and Ivan is 169 kg. The total mass of Brandon and Ivan is 123 kg.
  1. How much heavier is Oliver than Brandon?
  2. If the total mass of the 3 boys is 258 kg, how heavy is Ivan?
4 m
(a)

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(b)

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The total mass of Oliver and Ivan is 169 kg. The total mass of Brandon and Ivan is 123 kg.
  1. How much heavier is Oliver than Brandon?
  2. If the total mass of the 3 boys is 258 kg, how heavy is Ivan?