Multiple choice

A shopkeeper earns a profit of 20% on selling a book at 5% discount on printed price. Find the ratio of the cost price to the printed price.

  1. 19 : 24

  2. 20 : 21

  3. 19 : 25

  4. 21 : 25

  5. 4 : 5
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A Correct answer
Explanation

Let the printed price of the book be Rs. x.

The selling price of the book at 5% discount = 95x/100 

CP of the book = (SP * 100)/(100 + Profit%)

= (95x * 100)/120 = 95x/120 

Now, ratio = (95x/120)/x = 19 : 24

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