estimate a 20% tip on a taxi ride that costs $21.30.show your work

(no options or answer choices)

The way I figure it --

Ten percent of 20 = 2. Double that and the tip comes out to a little over $4.

To estimate a 20% tip on a taxi ride that costs $21.30, you can follow these steps:

1. Start by calculating 20% of the taxi fare. To do this, divide the fare by 100 and then multiply the result by 20.

(20 / 100) * $21.30 = $4.26

2. This means that the estimated tip amount is $4.26.

So, an estimated 20% tip on a taxi ride that costs $21.30 would be $4.26.