Question
The total mass of Victorium, Gabby and Diana is 21t kg. Victorium has a mass of 9t kg. Gabby is 3 kg heavier than Victorium.
  1. What is Diana's mass in terms of t?
  2. If t = 15, what is Diana's mass? 
3 m
(a)

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(b)

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The total mass of Victorium, Gabby and Diana is 21t kg. Victorium has a mass of 9t kg. Gabby is 3 kg heavier than Victorium.
  1. What is Diana's mass in terms of t?
  2. If t = 15, what is Diana's mass?