Question
The total mass of Tiffany, Joelle and Wendy is 23f kg. Tiffany has a mass of 9f kg. Joelle is 6 kg heavier than Tiffany.
  1. What is Wendy's mass in terms of f?
  2. If f = 13, what is Wendy's mass? 
3 m
(a)

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(b)

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The total mass of Tiffany, Joelle and Wendy is 23f kg. Tiffany has a mass of 9f kg. Joelle is 6 kg heavier than Tiffany.
  1. What is Wendy's mass in terms of f?
  2. If f = 13, what is Wendy's mass?