Question
The total mass of Vaidev and Mary is 8734 kg. Vaidev weighs 3835 kg. 
  1. What is Mary's mass?
  2. How much heavier than Vaidev is Mary?
4 m
(a)

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(b)

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The total mass of Vaidev and Mary is 8734 kg. Vaidev weighs 3835 kg. 
  1. What is Mary's mass?
  2. How much heavier than Vaidev is Mary?