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 \(18\frac{3}{4}\).
