Question
The total mass of Esther, Wendy and Sabrina is 20s kg. Esther has a mass of 6s kg. Wendy is 2 kg heavier than Esther.
  1. What is Sabrina's mass in terms of s?
  2. If s = 15, what is Sabrina's mass? 
3 m
(a)

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(b)

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The total mass of Esther, Wendy and Sabrina is 20s kg. Esther has a mass of 6s kg. Wendy is 2 kg heavier than Esther.
  1. What is Sabrina's mass in terms of s?
  2. If s = 15, what is Sabrina's mass?