Question
The total mass of Tiffany, Cindy and Nora is 39j kg. Tiffany has a mass of 7j kg. Cindy is 2 kg heavier than Tiffany.
  1. What is Nora's mass in terms of j?
  2. If j = 9, what is Nora's mass? 
3 m
(a)

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(b)

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The total mass of Tiffany, Cindy and Nora is 39j kg. Tiffany has a mass of 7j kg. Cindy is 2 kg heavier than Tiffany.
  1. What is Nora's mass in terms of j?
  2. If j = 9, what is Nora's mass?