Question
37 of the pens in a bag were brown and the rest were pink and yellow. 25% of the pink pens and 40% of the yellow pens were thrown away. There was an equal number of pink and yellow pens left. If there were 504 pink and yellow pens left,
  1. What was the number of brown pens?
  2. What was the total number of pens in the bag at first?
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(a)

Click button first when a symbol is required. X

(b)

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37 of the pens in a bag were brown and the rest were pink and yellow. 25% of the pink pens and 40% of the yellow pens were thrown away. There was an equal number of pink and yellow pens left. If there were 504 pink and yellow pens left,
  1. What was the number of brown pens?
  2. What was the total number of pens in the bag at first?