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A book sells for Tk 65. This price gives the seller a profit 30% on his cost. What will be the new selling price, if he cuts his profit to 10% of the cost?/একটি বই ৬৫ টাকায় বিক্রি করায় বিক্রেতার ৩০% লাভ হয়। কত টাকায় বিক্রয় করলে ১০% লাভ হত?

  1. A 45
  2. B 50
  3. C 55
  4. D None of these
Answer: C - 55

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