Question
The total mass of Anna, Emma and Opal is 29i kg. Anna has a mass of 8i kg. Emma is 8 kg heavier than Anna.
  1. What is Opal's mass in terms of i?
  2. If i = 10, what is Opal's mass? 
3 m
(a)

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(b)

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The total mass of Anna, Emma and Opal is 29i kg. Anna has a mass of 8i kg. Emma is 8 kg heavier than Anna.
  1. What is Opal's mass in terms of i?
  2. If i = 10, what is Opal's mass?