Question
Seth has a mass of 64 kg. Lui is 20 kg lighter than Seth.
  1. What is Lui's mass?
  2. Express Lui's mass as a fraction of Seth's mass. Give your answer in its lowest terms.
4 m
(a)

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(b)

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Seth has a mass of 64 kg. Lui is 20 kg lighter than Seth.
  1. What is Lui's mass?
  2. Express Lui's mass as a fraction of Seth's mass. Give your answer in its lowest terms.