Question
The total mass of Tina, Gabby and Gillian is 34j kg. Tina has a mass of 7j kg. Gabby is 9 kg heavier than Tina.
  1. What is Gillian's mass in terms of j?
  2. If j = 12, what is Gillian's mass? 
3 m
(a)

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(b)

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The total mass of Tina, Gabby and Gillian is 34j kg. Tina has a mass of 7j kg. Gabby is 9 kg heavier than Tina.
  1. What is Gillian's mass in terms of j?
  2. If j = 12, what is Gillian's mass?