The cost of 20 m of cloth is Rs 1600 then the cost of 24.5 m of cloth is

Correct option is (D) Rs \(18\frac{3}{4}\) \(\because\) Cost of \(5\frac{2}{5}\) litres of milk = Rs \(101\frac{1}{4}\)  \(\Rightarrow\) Cost of \(\frac{27}{5}\) litres of milk = Rs \(\frac{405}4\) \(\therefore\) Cost of 1 litres of milk = Rs \((\frac{405}4\div\frac{27}5)\) = Rs \((\frac{405}4\times\frac5{27})\) = Rs \((\frac{45}4\times\frac5{3})\) = Rs \((\frac{15\times5}4)\) = Rs \(\frac{75}4\) = Rs \(\frac{18\times4+3}4\) = Rs \((18+\frac34)\) = Rs \(18\frac{3}{4}\).

Correct option is  D) ₹ 1504

Correct Answer - ₹5,₹8,₹8

Correct option is (B) ₹1960 \(\because\) The cost of 20 m of cloth = Rs 1600 \(\therefore\) The cost of 24.5 m of cloth \(=Rs\,(\frac{1600}{20}\times24.5)\) \(=Rs\,(80\times24.5)\) = Rs 1960

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Correct Answer - B Make algebraic equation and proceed

यदि रेडियोएकत्व रत्रोत की प्रारंभिक गणना दर `N_0` है, तब N अर्द्ध-आयुओ के पश्चात् गणना दर होगी । `N=M_0(1/2)^n` `100=1600(1/2)^n` `:." "n=4` यदि स्रोत की अर्द्ध-आयु T है, तब 4...