Read the following information carefully and answer the question based on it.

There are three Writers - Prince, Kunal and Rajeev who write Hindi and English Books. Hindi and English books contain a certain number of pages.

• When Prince and Rajeev together started working for Hindi book, then after (2Y+8) days, Rajeev was replaced by Kunal then, both of them worked for 8 days to complete the Hindi book.
• Time taken by Prince and Kunal together to complete the Hindi book is (X+9) days, while time taken by Prince and Rajeev together to complete the English book is 36 days.
• Time taken by Rajeev to complete the English book alone is 60 days, while days taken by Prince to complete the English book alone is 125% more than that of a Hindi book.
• When Prince and Kunal started working for English book and on every fourth day Rajeev joined them. Then the English book completed in (X+2Y) days.

 Note : X and Y are natural numbers, where X is 150% more than that of Y. And X < 20. Number of days which any book is completed by any person alone is a natural number.