Multiple choice

If A merchant purchases 9 pens and sells 8 pens at the cost price of 9 pens, then his profit percent is:

  1. 5$\displaystyle{\frac{15}{17}}$
  2. 8$\displaystyle{\frac{2}{3}}$
  3. 12$\displaystyle{\frac{1}{2}}$
  4. 11$\displaystyle{\frac{1}{9}}$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Cost of 9 pens = 9C. Selling price of 8 pens = 9C. Selling price of 1 pen = (9/8)C. Profit = (9/8)C - C = (1/8)C. Profit percent = (1/8) * 100 = 12.5%.

AI explanation

Let the cost price of one pen be Re 1, making the cost price of 8 pens Rs 8. The selling price of 8 pens is equal to the cost price of 9 pens, which is Rs 9. Using the formula for profit percentage, (Profit / Cost Price) * 100, we get ((9 - 8) / 8) * 100 = 12.5%. The profit percentage is 12 1/2%.

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