Answer:
[tex]\large\boxed{\dfrac{8}{35}}[/tex]
Step-by-step explanation:
[tex]\text{Put}\ c=\dfrac{4}{7}\ \text{to the expression}\ \dfrac{2}{5}\times c:\\\\\dfrac{2}{5}\times\dfrac{4}{7}=\dfrac{2\times4}{5\times7}=\dfrac{8}{35}[/tex]
