Question
The total mass of Kathy, Julie and Penelope is 45x kg. Kathy has a mass of 4x kg. Julie is 8 kg heavier than Kathy.
  1. What is Penelope's mass in terms of x?
  2. If x = 10, what is Penelope's mass? 
3 m
(a)

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(b)

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The total mass of Kathy, Julie and Penelope is 45x kg. Kathy has a mass of 4x kg. Julie is 8 kg heavier than Kathy.
  1. What is Penelope's mass in terms of x?
  2. If x = 10, what is Penelope's mass?