Question
35 of the pencils in a bag were yellow and the rest were brown and grey. 40% of the brown pencils and 20% of the grey pencils were thrown away. There was an equal number of brown and grey pencils left. If there were 336 brown and grey 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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35 of the pencils in a bag were yellow and the rest were brown and grey. 40% of the brown pencils and 20% of the grey pencils were thrown away. There was an equal number of brown and grey pencils left. If there were 336 brown and grey pencils left,
  1. What was the number of yellow pencils?
  2. What was the total number of pencils in the bag at first?