Question
The total mass of Opal, Kathy and Jane is 41b kg. Opal has a mass of 5b kg. Kathy is 8 kg heavier than Opal.
  1. What is Jane's mass in terms of b?
  2. If b = 12, what is Jane's mass? 
3 m
(a)

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(b)

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The total mass of Opal, Kathy and Jane is 41b kg. Opal has a mass of 5b kg. Kathy is 8 kg heavier than Opal.
  1. What is Jane's mass in terms of b?
  2. If b = 12, what is Jane's mass?