Question
The total mass of Pamela, Tina and Mary is 41j kg. Pamela has a mass of 9j kg. Tina is 8 kg heavier than Pamela.
  1. What is Mary's mass in terms of j?
  2. If j = 12, what is Mary's mass? 
3 m
(a)

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(b)

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The total mass of Pamela, Tina and Mary is 41j kg. Pamela has a mass of 9j kg. Tina is 8 kg heavier than Pamela.
  1. What is Mary's mass in terms of j?
  2. If j = 12, what is Mary's mass?