By selling 99 pens, a trader gains the cost of 33 pens. Find his gain percentage?
Correct answer: A. 33 1/3%
- A. 33 1/3%
- B. 50%
- C. 25%
- D. 66 2/3%
- E. None of these
Explanation
Let the cost of one pen be C, so the cost of 99 pens is Rs. 99C. The gain is the cost of 33 pens, or Rs. 33C, hence gain percentage = (Rs. 33C ÷ Rs. 99C) x 100 = 33 1/3%. The likely wrong choice is 50%, which comes from comparing the gain with 66 pens or another incorrect base instead of the total cost of 99 pens.
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About Profit and Loss
Profit and loss compare the cost price and selling price of an item, using profit or loss percentages based on the cost price unless stated otherwise. Questions include marked price, discount, successive discounts, commission, and finding an unknown price, with care needed to distinguish discount from loss.
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