Question
The total mass of Esther, Usha and Opal is 40q kg. Esther has a mass of 9q kg. Usha is 3 kg heavier than Esther.
  1. What is Opal's mass in terms of q?
  2. If q = 12, what is Opal's mass? 
3 m
(a)

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(b)

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The total mass of Esther, Usha and Opal is 40q kg. Esther has a mass of 9q kg. Usha is 3 kg heavier than Esther.
  1. What is Opal's mass in terms of q?
  2. If q = 12, what is Opal's mass?