Question
The total mass of Zane and Lucy is 9019 kg. Zane weighs 3815 kg. 
  1. What is Lucy's mass?
  2. How much heavier than Zane is Lucy?
4 m
(a)

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(b)

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The total mass of Zane and Lucy is 9019 kg. Zane weighs 3815 kg. 
  1. What is Lucy's mass?
  2. How much heavier than Zane is Lucy?