A man sells an article for Rs. 100 and gains 25%. What was the cost price?
Correct answer: B. Rs. 80
- A. Rs. 75
- B. Rs. 80
- C. Rs. 85
- D. Rs. 90
Explanation
To calculate the cost price (CP) when you know the selling price (SP) and the profit percentage, use the formula: CP = SP / (1 + Profit Percentage). Here, the selling price is Rs. 100, and the profit percentage is 25%, or 0.25 in decimal. Therefore, CP = 100 / (1 + 0.25) = 100 / 1.25 = Rs. 80.Option A (Rs. 75) results in a higher profit percentage than 25%, which is incorrect. Option C (Rs. 85) and Option D (Rs. 90) both result in lower profit percentages than the stated 25%, which are also incorrect. Thus, Option B (Rs. 80) is the correct choice.
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