In a bookstore there are 2 shelves A and B. In both these shelves 3 different colour book i.e. red, green and yellow coloured book are kept. In shelf A ratio of red, green and yellow coloured books is 5 ∶ 4 ∶ 3 and in shelf B the ratio is 5 ∶ 10 ∶ 12. If green colour book in shelf B is 10 more than that in shelf A. Calculate the sum of red colour book in both the shelves if total number of books is 255.