Question
The total mass of Glen and Lucy is 85211 kg. Glen weighs 3135 kg. 
  1. What is Lucy's mass?
  2. How much heavier than Glen is Lucy?
4 m
(a)

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(b)

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The total mass of Glen and Lucy is 85211 kg. Glen weighs 3135 kg. 
  1. What is Lucy's mass?
  2. How much heavier than Glen is Lucy?