Question
The total mass of Tammy, Barbara and Erika is 34x kg. Tammy has a mass of 8x kg. Barbara is 7 kg heavier than Tammy.
  1. What is Erika's mass in terms of x?
  2. If x = 13, what is Erika's mass? 
3 m
(a)

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(b)

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The total mass of Tammy, Barbara and Erika is 34x kg. Tammy has a mass of 8x kg. Barbara is 7 kg heavier than Tammy.
  1. What is Erika's mass in terms of x?
  2. If x = 13, what is Erika's mass?