Question
The total mass of Dana, Marion and Gillian is 41c kg. Dana has a mass of 7c kg. Marion is 9 kg heavier than Dana.
  1. What is Gillian's mass in terms of c?
  2. If c = 10, what is Gillian's mass? 
3 m
(a)

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(b)

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The total mass of Dana, Marion and Gillian is 41c kg. Dana has a mass of 7c kg. Marion is 9 kg heavier than Dana.
  1. What is Gillian's mass in terms of c?
  2. If c = 10, what is Gillian's mass?