यदि किसी region की density unchanged है लेकिन population 150000 से 195000 हो जाती है, तो area में कितने प्रतिशत वृद्धि हुई?
Explanation opens after your attempt
C. 30 प्रतिशत30 percent
Simple Explanation
Population increase \(195000-150000=45000\) है। Percentage increase \(\frac{45000}{150000}\times100=30\%\) है। Density unchanged होने के लिए area भी exactly 30 percent बढ़ना चाहिए। इसलिए तीसरा विकल्प सही है। Constant density का अर्थ population and area का same proportional change है। / Population increases by \(195000-150000=45000\). Percentage increase is \(\frac{45000}{150000}\times100=30\%\). For density to remain unchanged, area must also increase by exactly 30 percent. Therefore, the third option is correct. Constant density means population and area change by the same proportion.
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