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

  • A. Tk.20
  • B. Tk. 18
  • C. Tk. 15
  • D. Tk. 12
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সহকারী পরিচালক(AD) -12.11.2021
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