Vibhu invites her three friends to her home for a party. She cuts a pizza into 10 slices and offers two slices to each one of them. $\frac{4}{20}$ is an equivalent fraction representing the portion of the pizza offered by her to her friends.

The given statement is true.

Total number of slices = 10

She offers two slices of pizza to her friends.

Thus, the fraction of pizza offered to her friends = $\frac{2}{10}$

Now,

$\frac{2\times 2}{10\times 2}=\frac{4}{20}$

So, $\frac{4}{20}$ is an equivalent fraction representing the portion of the pizza offered by her to her friends.