Question
The total mass of Jean, Julie and Jen is 29a kg. Jean has a mass of 5a kg. Julie is 9 kg heavier than Jean.
  1. What is Jen's mass in terms of a?
  2. If a = 12, what is Jen's mass? 
3 m
(a)

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(b)

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The total mass of Jean, Julie and Jen is 29a kg. Jean has a mass of 5a kg. Julie is 9 kg heavier than Jean.
  1. What is Jen's mass in terms of a?
  2. If a = 12, what is Jen's mass?