Question
The total mass of Gillian, Fiona and Xandra is 25a kg. Gillian has a mass of 6a kg. Fiona is 6 kg heavier than Gillian.
  1. What is Xandra's mass in terms of a?
  2. If a = 11, what is Xandra's mass? 
3 m
(a)

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(b)

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The total mass of Gillian, Fiona and Xandra is 25a kg. Gillian has a mass of 6a kg. Fiona is 6 kg heavier than Gillian.
  1. What is Xandra's mass in terms of a?
  2. If a = 11, what is Xandra's mass?