Question
The total mass of Mary, Rachel and Lucy is 38y kg. Mary has a mass of 9y kg. Rachel is 6 kg heavier than Mary.
  1. What is Lucy's mass in terms of y?
  2. If y = 10, what is Lucy's mass? 
3 m
(a)

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(b)

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The total mass of Mary, Rachel and Lucy is 38y kg. Mary has a mass of 9y kg. Rachel is 6 kg heavier than Mary.
  1. What is Lucy's mass in terms of y?
  2. If y = 10, what is Lucy's mass?