Question
The total mass of Eric and Ethan is 171 kg. The total mass of Tom and Ethan is 146 kg.
  1. How much heavier is Eric than Tom?
  2. If the total mass of the 3 boys is 234 kg, how heavy is Ethan?
4 m
(a)

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(b)

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The total mass of Eric and Ethan is 171 kg. The total mass of Tom and Ethan is 146 kg.
  1. How much heavier is Eric than Tom?
  2. If the total mass of the 3 boys is 234 kg, how heavy is Ethan?