Question
Zane has a mass 50 kg. Billy is 4 kg heavier than Zane and Fred is 12 kg lighter than Billy.
  1. What is the mass of Fred?
  2. What is the total mass of the three students?
4 m
(a)

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(b)

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Zane has a mass 50 kg. Billy is 4 kg heavier than Zane and Fred is 12 kg lighter than Billy.
  1. What is the mass of Fred?
  2. What is the total mass of the three students?