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1. A shopkeeper carns a profit of 12% on selling a book at 10% discount on the printed price. The ratio of the cost price and the printed price of the book is

  • A. 45:56
  • B. 45:56
  • C. 45:56
  • D. 45:56

Answer: Option A

Explanation:

Let the CP of book = Tk.x
Then, SP of book = (100 + 12) × x/100 = 112x/100
Now. the printed price = Tk.y
Then, after the discount, the SP
= (100−10) × y/100 = 90y/100
Since both SP are same.
Then, 112x/100 = 90y/100 = xy = 45/56
= 45 : 56.

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