Question
The total mass of Yoko, Tina and Gillian is 24a kg. Yoko has a mass of 9a kg. Tina is 4 kg heavier than Yoko.
  1. What is Gillian's mass in terms of a?
  2. If a = 11, what is Gillian's mass? 
3 m
(a)

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(b)

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The total mass of Yoko, Tina and Gillian is 24a kg. Yoko has a mass of 9a kg. Tina is 4 kg heavier than Yoko.
  1. What is Gillian's mass in terms of a?
  2. If a = 11, what is Gillian's mass?