In each of the following questions, a question is followed by three statements numbered I, II and III. Read all the statements and find which information is/are necessary to answer. निम्नलिखित में से प्रत्येक प्रश्न में, तीन कथन I, II और III दिए गए हैं। सभी कथनों को पढ़ें और ज्ञात कीजिये कि उत्तर देने के लिए कौन सी जानकारी/जानकारियां आवश्यक है। A milkman sells a homogeneous mixture of water and milk at a rate of Rs.40 per liter. Find the profit percentage of the milkman. एक दूधवाला पानी और दूध के मिश्रण को 40 रुपये प्रति लीटर की दर से बेचता है। दूधवाले का लाभ प्रतिशत ज्ञात कीजिये। I: He bought milk at the rate of Rs.35 per liter. II: He bought water at Rs.10 lower than the rate of milk per liter. III: He sold total 80 litre mixture. I : उसने दूध 35 रुपये प्रति लीटर की दर से ख़रीदा। II: उसने पानी को दूध से 10 रुपये प्रति लीटर कम दर से खरीदा। III: उसने कुल 80 लीटर मिश्रण बेचा।
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