Question
The total mass of Zara, Joelle and Roshel is 27z kg. Zara has a mass of 4z kg. Joelle is 8 kg heavier than Zara.
  1. What is Roshel's mass in terms of z?
  2. If z = 9, what is Roshel's mass? 
3 m
(a)

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(b)

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The total mass of Zara, Joelle and Roshel is 27z kg. Zara has a mass of 4z kg. Joelle is 8 kg heavier than Zara.
  1. What is Roshel's mass in terms of z?
  2. If z = 9, what is Roshel's mass?