Question
58 of the pencils in a bag were yellow and the rest were pink and black. 20% of the pink pencils and 10% of the black pencils were thrown away. There was an equal number of pink and black pencils left. If there were 216 pink and black pencils left,
  1. What was the number of yellow pencils?
  2. What was the total number of pencils in the bag at first?
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(a)

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(b)

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58 of the pencils in a bag were yellow and the rest were pink and black. 20% of the pink pencils and 10% of the black pencils were thrown away. There was an equal number of pink and black pencils left. If there were 216 pink and black pencils left,
  1. What was the number of yellow pencils?
  2. What was the total number of pencils in the bag at first?