If a bookstore owner buys 15 books less for Tk. 900 when the price of each book goes up by Tk. 3, than find the original price of a book.

If a bookstore owner buys 15 books less for Tk. 900 when the price of each book goes up by Tk. 3, than find the original price of a book. Correct Answer Tk. 12

900⁄x- 900⁄(x+3)= 15 Or, (x+15) (x-12)= 0 So, x=12 
Bissoy MCQ

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