Question
The total mass of Emma, Jane and Shannon is 31j kg. Emma has a mass of 7j kg. Jane is 2 kg heavier than Emma.
  1. What is Shannon's mass in terms of j?
  2. If j = 13, what is Shannon's mass? 
3 m
(a)

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(b)

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The total mass of Emma, Jane and Shannon is 31j kg. Emma has a mass of 7j kg. Jane is 2 kg heavier than Emma.
  1. What is Shannon's mass in terms of j?
  2. If j = 13, what is Shannon's mass?