Question
The total mass of Justin and Cody is 186 kg. The total mass of David and Cody is 149 kg.
  1. How much heavier is Justin than David?
  2. If the total mass of the 3 boys is 252 kg, how heavy is Cody?
4 m
(a)

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(b)

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The total mass of Justin and Cody is 186 kg. The total mass of David and Cody is 149 kg.
  1. How much heavier is Justin than David?
  2. If the total mass of the 3 boys is 252 kg, how heavy is Cody?