Question
There were some pink, purple and grey files in a box. 211 of the files were purple. The ratio of the number of pink files to the number of grey files was 4 : 5. There were 279 fewer purple files than grey files.
  1. Find the ratio of the number of pink files to the number of purple files to the number of grey files in the box.
  2. How many grey files were there?
4 m
(a)

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(b)

Click button first when a symbol is required. X

There were some pink, purple and grey files in a box. 211 of the files were purple. The ratio of the number of pink files to the number of grey files was 4 : 5. There were 279 fewer purple files than grey files.
  1. Find the ratio of the number of pink files to the number of purple files to the number of grey files in the box.
  2. How many grey files were there?