Question
The total mass of Nicole, Cathy and Abi is 29i kg. Nicole has a mass of 9i kg. Cathy is 9 kg heavier than Nicole.
  1. What is Abi's mass in terms of i?
  2. If i = 13, what is Abi's mass? 
3 m
(a)

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(b)

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The total mass of Nicole, Cathy and Abi is 29i kg. Nicole has a mass of 9i kg. Cathy is 9 kg heavier than Nicole.
  1. What is Abi's mass in terms of i?
  2. If i = 13, what is Abi's mass?