\(A=\dfrac{1}{6}+\left(\dfrac{1}{5}:\dfrac{3}{5}\right)=\dfrac{1}{6}+\dfrac{1}{3}=\dfrac{1}{2}\)
\(B=\dfrac{1}{5}+\left(\dfrac{2}{5}.\dfrac{1}{3}\right)=\dfrac{1}{5}+\dfrac{2}{15}=\dfrac{1}{3}\)
\(C=\left(\dfrac{2}{5}:\dfrac{3}{5}\right).\dfrac{3}{8}=\dfrac{2}{3}.\dfrac{3}{8}=\dfrac{1}{4}\)
Do \(\dfrac{1}{2}>\dfrac{1}{3}>\dfrac{1}{4}\)
\(\Rightarrow A>B>C\)
