Question
25 of the pencils in a bag were red and the rest were black and white. 25% of the black pencils and 40% of the white pencils were thrown away. There was an equal number of black and white pencils left. If there were 300 black and white pencils left,
  1. What was the number of red pencils?
  2. What was the total number of pencils in the bag at first?
5 m
(a)

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(b)

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25 of the pencils in a bag were red and the rest were black and white. 25% of the black pencils and 40% of the white pencils were thrown away. There was an equal number of black and white pencils left. If there were 300 black and white pencils left,
  1. What was the number of red pencils?
  2. What was the total number of pencils in the bag at first?