Question
The total mass of Penelope, Risa and Gabby is 38t kg. Penelope has a mass of 5t kg. Risa is 6 kg heavier than Penelope.
  1. What is Gabby's mass in terms of t?
  2. If t = 9, what is Gabby's mass? 
3 m
(a)

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(b)

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The total mass of Penelope, Risa and Gabby is 38t kg. Penelope has a mass of 5t kg. Risa is 6 kg heavier than Penelope.
  1. What is Gabby's mass in terms of t?
  2. If t = 9, what is Gabby's mass?