The population of a town is 72,000. It increases by 10% in the first year, by 20% in the second year, and decreases by 25% in the third year. Find the population after three years. / एक नगर की जनसंख्या 72,000 है। पहले वर्ष इसमें 10%, दूसरे वर्ष 20% की वृद्धि और तीसरे वर्ष 25% की कमी होती है। तीन वर्ष बाद जनसंख्या ज्ञात कीजिए।
Answer and explanation are free to read — no sign-in required. / उत्तर और व्याख्या पढ़ने के लिए साइन-इन आवश्यक नहीं है।
Correct Answer / सही उत्तर
B. 71,280 / 71,280
Explanation / व्याख्या
Final population = 72,000 × 110/100 × 120/100 × 75/100 = 71,280. / अंतिम जनसंख्या = 72,000 × 110/100 × 120/100 × 75/100 = 71,280।
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