Question
The total mass of Peter and Erika is 8737 kg. Peter weighs 3027 kg. 
  1. What is Erika's mass?
  2. How much heavier than Peter is Erika?
4 m
(a)

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(b)

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The total mass of Peter and Erika is 8737 kg. Peter weighs 3027 kg. 
  1. What is Erika's mass?
  2. How much heavier than Peter is Erika?