Question
The total mass of Ivory, Gem and Jen is 39f kg. Ivory has a mass of 4f kg. Gem is 2 kg heavier than Ivory.
  1. What is Jen's mass in terms of f?
  2. If f = 13, what is Jen's mass? 
3 m
(a)

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(b)

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The total mass of Ivory, Gem and Jen is 39f kg. Ivory has a mass of 4f kg. Gem is 2 kg heavier than Ivory.
  1. What is Jen's mass in terms of f?
  2. If f = 13, what is Jen's mass?