Question
The total mass of Neave and Opal is 8323 kg. Neave weighs 4127 kg. 
  1. What is Opal's mass?
  2. How much heavier than Neave is Opal?
4 m
(a)

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(b)

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The total mass of Neave and Opal is 8323 kg. Neave weighs 4127 kg. 
  1. What is Opal's mass?
  2. How much heavier than Neave is Opal?