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A multi-coloured book has 28% of its pages in green colour.

The rest of the pages are yellow, pink and grey in the ratio 7:3:8.

There are 64 more green pages than pink pages.

(a) Find the total number of pages in the book.

(b) Find the number of pink pages in the book.

Notes to student:

If the question above has parts, (e.g. (a) and (b)), given that the answer for part (a) is 10 and the answer for part (b) is 12, give your answer as:10,12