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Directions : There are 28000 people living in a town, out of which 6500 drink milk only, 5500 drink tea only, 4500 drink coffee only. 3000 drink tea and milk, 5000 drink tea and coffee and 4000 drink milk and coffee. The ratio of people who drink all three beverage and do not drink any beverage is 2 : 3.निर्देश : एक कस्बे में 28000 लोग रहते हैं, जिनमें से 6500 केवल दूध पीते हैं, 5500 केवल चाय पीते हैं, 4500 केवल कॉफी पीते हैं। 3000 चाय व दूध पीते है, 5000 चाय व कॉफी पीते है और 4000 दूध व कॉफी पीते है। तीनों पेय पदार्थ पीने वाले तथा कोई पेय पदार्थ न पीने वाले लोगों का अनुपात 2 : 3 है।Give the number of people who drink all three beverage.तीनों पेय पदार्थ पीने वाले लोगों की संख्या बताओ। |
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Answer» Given : There are 28000 people living in a town, out of which 6500 drink milk only, 5500 drink TEA only, 4500 drink coffee only. 3000 drink tea and milk, 5000 drink tea and coffee and 4000 drink milk and coffee. The ratio of people who drink all three beverage and do not drink any beverage is 2 : 3. To find : the number of people who drink all three beverage. Solution: Total People T = 28000 only Milk = 6500 only Tea = 5500 only coffee = 4500 drink all three beverage = 3A Do not Drink any = 2A tea and milk = 3000 => tea & milk only = 3000 - 3A tea and coffee = 5000 => tea and coffee only = 5000 - 3A milk and coffee. = 4000 => milk and coffee only = 4000 - 3A Total = Milk only + tea only + Coffee only + tea & milk only + tea and coffee only + milk and coffee only + drink all three beverage + Do not Drink any => 28000 = 6500 + 5500 + 4500 + 3000 - 3A + 5000 - 3A + 4000 - 3A + 3A + 2A => 28000 = 28500 - 4A => 4A = 500 => A = 125 => 3A = 375 number of people who drink all three beverage. = 375 तीनों पेय पदार्थ पीने वाले लोगों की संख्या = 375 Learn More: 50 students of a class like either oranges or grapes or both. 20 of ... Which two-way table contains the same INFORMATION as the Venn ... 125, 100 and 145 students appeared at post graduate examination ... |
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