Multiple choice

If the cost price of 20 books is the same as selling price of 25 books, then the loss percentage is

  1. 20

  2. 25

  3. 22

  4. 24

  5. 0
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A Correct answer
Explanation

Cost of 20 = Selling price of 25. Let CP of 1 book be 1. CP of 20 = 20. SP of 25 = 20. SP of 1 = 20/25 = 0.8. Loss = 1 - 0.8 = 0.2. Loss % = (0.2/1) * 100 = 20%.

AI explanation

Let the cost price of one book be 1; the cost price of 20 books is 20, which equals the selling price of 25 books. The selling price of one book is 20 divided by 25, or 0.80, meaning there is a 0.20 loss per book. Using the loss percentage formula, (0.20 divided by 1) times 100 equals 20%.

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