Question
Kathy has a mass of 36 kg. Kathy is 9 kg heavier than Perry. Eric is as heavy as Perry.
  1. How heavy is Eric?
  2. What is the total mass of the 3 children?
4 m
(a)

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(b)

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Kathy has a mass of 36 kg. Kathy is 9 kg heavier than Perry. Eric is as heavy as Perry.
  1. How heavy is Eric?
  2. What is the total mass of the 3 children?