Percentage practice question for Railways, SSC. Review the correct answer and explanation, then continue with related practice below.
The population of a town increases by 20% in the first year and 25% in the second year. In the third year, it decreases by 20%. If the population after three years is 72,000, what was the original population?
किसी नगर की जनसंख्या पहले वर्ष 20% और दूसरे वर्ष 25% बढ़ती है।
तीसरे वर्ष इसमें 20% की कमी होती है।
यदि तीन वर्षों बाद जनसंख्या 72,000 है, तो प्रारंभिक जनसंख्या कितनी थी?
Answer and explanation are free to read — no sign-in required.उत्तर और व्याख्या पढ़ने के लिए साइन-इन आवश्यक नहीं है।
Correct Answerसही उत्तर
C. 60,000 / 60,000
Explanationव्याख्या
Overall multiplier = 1.20 × 1.25 × 0.80 = 1.20.
Therefore original population = 72,000
1.20 = 60,000.
कुल गुणक = 1.20 × 1.25 × 0.80 = 1.20।
अतः प्रारंभिक जनसंख्या = 72,000
1.20 = 60,000।
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