8. There are 2016 kangaroos, each of them is either grey or red, at least one of them is grey and at least
one is red. For every kangaroo K we compute the fraction of the number of kangaroos of the other
colour divided by the number of kangaroos of the same colour as K (including the kangaroo K). Find the
sum of the fractions of all 2016 kangaroos.
(A) 2016 (B) 1344 (C) 1008 (D) 672 (E) more information is needed
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