यदि किसी country's national density 180 व्यक्ति प्रति वर्ग किलोमीटर है लेकिन 70 प्रतिशत population केवल 30 प्रतिशत land area में रहती है, तो उस inhabited portion की average density national average से कैसी होगी?
Explanation opens after your attempt
C. लगभग 2.33 गुनाAbout 2.33 times
Simple Explanation
Selected portion की density relative to national density \(\frac{0.70}{0.30}=2.333...\) times होगी। इसलिए उसकी average density \(180 \times 2.333...\approx 420\) persons per square kilometre होगी। तीसरा विकल्प सही है। यह example दिखाता है कि national average concentrated settlement zones की वास्तविक density को काफी understate कर सकती है। / The density of the selected portion relative to national density is \(\frac{0.70}{0.30}=2.333...\) times. Its average density is therefore about \(180 \times 2.333... \approx 420\) persons per square kilometre. The third option is correct. This example shows how a national average can substantially understate density in concentrated settlement zones.
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