Question
Luke has a mass of 42 kg. Mark is 15 kg lighter than Luke.
  1. What is Mark's mass?
  2. Express Mark's mass as a fraction of Luke's mass. Give your answer in its lowest terms.
4 m
(a)

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(b)

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Luke has a mass of 42 kg. Mark is 15 kg lighter than Luke.
  1. What is Mark's mass?
  2. Express Mark's mass as a fraction of Luke's mass. Give your answer in its lowest terms.