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Engineering Exams RRB-JE JE (Junior Engineer) CMA (Chemical and Metallurgical Assistant) DMS (Depot Material Superintendent) CS (Chemical Supervisor - Research) MS (Metallurgical Supervisor - Research) Mathematics 2024 16.12.24 Paper-1 Shift-3 Medium +1 -0.33
A vendor bought lemons at 40 for a rupee. How many must he sell for a rupee to gain 25%?
Correct Answer: D. 32
Explanation: The correct answer is Option D: 32. To solve this, first determine the cost price (CP) of a single lemon. Since 40 lemons are bought for 1 rupee, the CP of one lemon is 1/40 rupee. To achieve a profit of 25%, the selling price (SP) of one lemon must be 125% of its cost price. Calculating this gives an SP of (125/100) * (1/40), which simplifies to 1/32 rupee per lemon. Therefore, to earn a 25% gain, the vendor must sell 32 lemons for one rupee.
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