\(\dfrac{2}{5}:\dfrac{6}{25}\\ =\dfrac{2}{5}\times\dfrac{25}{6}\\ =\dfrac{2}{5}\times\dfrac{5\times5}{2\times3}=\dfrac{5}{3}\)
\(\dfrac{2}{5}:\dfrac{6}{25}\)
\(=\dfrac{2}{5}\times\dfrac{25}{6}\)
\(=\dfrac{2}{5}\times\dfrac{5\times5}{2\times3}\)
\(=\dfrac{5}{3}\)