यदि किसी region की density 300 से बढ़कर 375 हो और area 20 प्रतिशत बढ़े, तो population में कितने प्रतिशत वृद्धि हुई?
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Correct Answer
C. 50 प्रतिशत50 percent
Simple Explanation
Density multiplier \(375/300 = 1.25\) है। Area multiplier 1.20 है। इसलिए population multiplier \(1.25 \times 1.20 = 1.50\) होगा। Population 50 percent बढ़ी और तीसरा विकल्प सही है। केवल density increase 25 percent को population increase मानना गलत होगा क्योंकि area भी बढ़ी है। / The density multiplier is \(375/300=1.25\). The area multiplier is 1.20. Therefore, population multiplier is \(1.25 \times 1.20 = 1.50\). Population increased by 50 percent, so the third option is correct. It would be wrong to treat the 25 percent density increase as the population increase because area also expanded.
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