Answer:
B. 7/10
Explanation:
Given the expression:
[tex]\frac{2}{5}\div\frac{4}{7}[/tex]We change the division sign to multiplication and take the reciprocal of the fraction after the division sign.
[tex]\begin{gathered} =\frac{2}{5}\times\frac{7}{4} \\ =\frac{1}{5}\times\frac{7}{2} \\ =\frac{7}{10} \end{gathered}[/tex]