Question
The total mass of Raeann, Elyse and Risa is 20b kg. Raeann has a mass of 7b kg. Elyse is 5 kg heavier than Raeann.
  1. What is Risa's mass in terms of b?
  2. If b = 11, what is Risa's mass? 
3 m
(a)

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(b)

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The total mass of Raeann, Elyse and Risa is 20b kg. Raeann has a mass of 7b kg. Elyse is 5 kg heavier than Raeann.
  1. What is Risa's mass in terms of b?
  2. If b = 11, what is Risa's mass?