Verified Answer :

Louli

Answer:
\(\frac{2}{5}\)

Explanation:
A fraction is said to be in the simplest form if there is no common factor between the numerator and the denominator.

In the given fraction, 
\(\frac{40}{100}\) , we can note that both the numerator and the denominator can be divided by 10.

This will give us:
\(\frac{4}{10}\)

Now, we can note that both the numerator and the denominator in 
\(\frac{4}{10}\) can be divided by 2

This will give us:
\(\frac{2}{5}\)

The aren't any common factors between the 2 and the 5, therefore, 
\(\frac{2}{5}\) is the simplest form of the given fraction.

Hope this helps :)