Answer:
[tex] \frac{405}{1000 } [/tex]
81/200
Step-by-step explanation:
After decimal point, there are 3 decimal places.
[tex]0.405 = \frac{405}{1000}[/tex]
Now, reduce to simplest form
[tex]\frac{405}{1000}=\frac{81}{200}[/tex]