Question
The total mass of Shiyun, Betty and Kimberly is 23w kg. Shiyun has a mass of 6w kg. Betty is 7 kg heavier than Shiyun.
  1. What is Kimberly's mass in terms of w?
  2. If w = 10, what is Kimberly's mass? 
3 m
(a)

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(b)

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The total mass of Shiyun, Betty and Kimberly is 23w kg. Shiyun has a mass of 6w kg. Betty is 7 kg heavier than Shiyun.
  1. What is Kimberly's mass in terms of w?
  2. If w = 10, what is Kimberly's mass?