यदि किसी region में cultivated-land density arithmetic density की 4 गुना है, तो cultivated land total area का कितना percent है?
Explanation opens after your attempt
B. 25 प्रतिशत25 percent
Simple Explanation
Arithmetic density \(P/A\) और cultivated-land density \(P/C\) है। यदि \(P/C = 4(P/A)\), तो \(A/C=4\), इसलिए \(C=A/4\)। Cultivated land total area का 25 percent है। इसलिए दूसरा विकल्प सही है। यह inverse denominator relationship का application है। / Arithmetic density is \(P/A\), while density relative to cultivated land is \(P/C\). If \(P/C = 4(P/A)\), then \(A/C=4\), so \(C=A/4\). Thus cultivated land is 25 percent of total area. Therefore, the second option is correct. This is an application of the inverse relationship between density and the area used as denominator.
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