Question
The total mass of Fanny and Justin is 91 kg. Fanny weighs 13 kg more than Justin.
  1. Find Justin's mass.
  2. Express Justin's mass as a fraction of Fanny's mass in its simplest form.
4 m
(a)

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(b)

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The total mass of Fanny and Justin is 91 kg. Fanny weighs 13 kg more than Justin.
  1. Find Justin's mass.
  2. Express Justin's mass as a fraction of Fanny's mass in its simplest form.