Question
Andy has a mass of 57 kg. Bobby is 3 kg lighter than Andy.
  1. What is Bobby's mass?
  2. Express Bobby's mass as a fraction of Andy's mass. Give your answer in its lowest terms.
4 m
(a)

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(b)

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Andy has a mass of 57 kg. Bobby is 3 kg lighter than Andy.
  1. What is Bobby's mass?
  2. Express Bobby's mass as a fraction of Andy's mass. Give your answer in its lowest terms.