The ratio of the number of English books to Hindi books in a library shelf is 4:3. If 90 Hindi books are written by Pradeep, which constitutes 30% of the Hindi books, then find the difference between the number of English books and Hindi books in the shelf.
Number of Hindi books = 90/0.3 = 300 Number of English books = 300 × (4/3) = 400 Required difference = 400 – 300 = 100
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