Question
The total mass of Fred and Olivia is 67311 kg. Fred weighs 3249 kg. 
  1. What is Olivia's mass?
  2. How much heavier than Fred is Olivia?
4 m
(a)

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(b)

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The total mass of Fred and Olivia is 67311 kg. Fred weighs 3249 kg. 
  1. What is Olivia's mass?
  2. How much heavier than Fred is Olivia?