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Profit, Loss & Discount · Question 16 of 72

Question 16

MediumOriginal question

The cost price of 18 notebooks equals the selling price of 15 notebooks. What is the profit percentage?

Options for question 16

Show the answer and explanation
CorrectNot quiteAnswer B

Correct answer: B

Explanation

  1. Let each notebook cost ₹1. Then 15 notebooks sell for ₹18.

  2. CP of 15 notebooks = ₹15, SP = ₹18, profit = ₹3.

  3. Profit % = 315×100=20%\frac{3}{15} \times 100 = 20\%.

Worth noting

Dividing the difference 3 by 18 gives 1623%16\frac{2}{3}\%. The profit must be compared with the cost of the SAME 15 notebooks.

Concept
CP of m items equals SP of n items
Typical time
50 s
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