Question

Carry out the division of rational number:

${\displaystyle 5÷\frac{2}{5}}$

Answer 1

${\displaystyle 5÷\frac{2}{5}}$ 

${\displaystyle =\frac{5}{1}÷\frac{2}{5}}$

${\displaystyle =\frac{5\times 5}{1\times 2}}$

${\displaystyle =\frac{25}{2}}$