Question
The total mass of Linda, Erika and Elyse is 40n kg. Linda has a mass of 7n kg. Erika is 7 kg heavier than Linda.
  1. What is Elyse's mass in terms of n?
  2. If n = 10, what is Elyse's mass? 
3 m
(a)

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(b)

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The total mass of Linda, Erika and Elyse is 40n kg. Linda has a mass of 7n kg. Erika is 7 kg heavier than Linda.
  1. What is Elyse's mass in terms of n?
  2. If n = 10, what is Elyse's mass?